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Journal Week 22- Wed 2/10 J: 30 Facts from “What Darwin Never Knew” Video TI: Unit 4 Genetics Folder (50 pts) CW: “What Darwin Never Knew” Video, Genetics.

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Presentation on theme: "Journal Week 22- Wed 2/10 J: 30 Facts from “What Darwin Never Knew” Video TI: Unit 4 Genetics Folder (50 pts) CW: “What Darwin Never Knew” Video, Genetics."— Presentation transcript:

1 Journal Week 22- Wed 2/10 J: 30 Facts from “What Darwin Never Knew” Video TI: Unit 4 Genetics Folder (50 pts) CW: “What Darwin Never Knew” Video, Genetics Test Remediation  HW: Interactive Reader pgs DUE Th 2/19

2 Journal Week 22- Thurs 2/12 J: none TI: none
CW: Set up Unit 5 Evolution Folder, Course Selection HW: Evolution Unit Cover Page & Vocab DUE T 2/17 (20 pts), Interactive Reader pgs DUE Th 2/19

3 Update Table of Contents & Title AND Number EACH page!
Left Side, pg # Right Side, pg # (1) Table of Contents (2) Essential Questions (3) Review & Reflection (4) Unit Concept Map (5) Vocab (6) Vocab (7) Early Ideas About Evolution (8) Fathers of Evolution Guided Notes (9) Evidence Debate Paragraph (10) Evidence for Evolution Notes (11) Draw the 5 fingers of Evolution (12) Mechanisms of Evolution Notes (13) Selection graphs & Practice (14) Types of Selection Notes (15) Speciation through isolation Notes (16) Patterns in Evolution Notes (17) Natural Selection Simulation (18) Hardy-Weinburg Equilibrium Notes (19) Origins of Life Video Questions (20) Fossil Record & Origins Guided Notes (21) Hominid Concept Map (22) Hominid Evolution Notes

4 Journal Week 22- Fri 2/13 J: none TI: Journal Weeks 21 & 22 (50 pts)
CW: Fathers of Evolution Guided Notes, Early Ideas about Evolution Power Notes HW: Evolution Unit Cover Page & Vocab DUE T 2/17 (20 pts), Interactive reader pgs DUE Th 2/19, Genetics Test Remediation DUE T 2/17 (30 pts) Left Side Pg # Right Side Early Ideas about Evolution 7 Fathers of Evolution Guided Notes 8

5 Evolution Biology Mrs. Narubin

6 Theory of Evolution Evolution: is the change of a species over time
Modern organisms descended from ancient organisms.

7 Charles Darwin Father of Evolution Born in England 1809
1831 set sail from England around the world on H.M.S. Beagle Published the “Origin of Species” which proposed that natural selection caused evolution

8 Galapagos Islands Group of islands off the coast of South America
Islands are close together, but have different climates Turtles on each island had different shells Finch’s had different beaks

9

10 Darwin’s Observations
Collected fossils around the world and compared them to modern species. Some were similar to species alive now and some were completely different. He questioned why so many species had become extinct and if they were related to living species.

11 Darwin’s Theories: Evolution by Natural Selection
1) Survival of the Fittest- organisms with the best adaptations survive (strength, speed, camouflage, armor, ect.) 2) Natural Selection- those individuals that are best suited for their environment get to live and reproduce. 3) Struggle for existence- all members of an ecosystem are in constant competition for food and survival.

12 Natural Selection Cont’d.
Natural selection changes a population over many successive generations-NOT AN INDIVIDUAL Changes that increase a species fitness Fitness- ability to reproduce and survive in environment Adaptation- inherited characteristics that increase chance of survival Beaks on finches, porcupine quills

13 Not Natural…Artificial Selection
Artificial Selection: nature provides a variety of off spring and humans select the variations they like.

14 Summary of Darwin’s Theory
Individual organisms differ, some is due to genetics variation- variations in genes from parent to offspring (ex: Some cows produce more milk than others, Some horses faster than others) Organisms produce more offspring than can survive, and many do not survive. The survivors are in constant competition over resources. (ex: food)

15 Summary of Darwin’s Theory, Cont’d.
Organisms have unique advantages and disadvantages. Best suited individuals for the environment survive and reproduce, passing on the best traits for survival to the new generation. Descent with Modification- Todays living species descended with changes from other species over time Common descent- all species come from a common ancestor

16 Origin of Species Darwin published “On the Origin of Species” in 1859
Origin of Species- Proposed natural selection caused evolution He was reluctant to publish his controversial theory of Evolution. Originally told his wife to publish book after he died, but another scientist was trying to take credit for the theory.

17 Jean-Baptiste Lamarck
French Naturalist One of the 1st scientists to recognize things changed over time & species descended from other species Before Darwin-- believed organisms change over time Believed organisms lost or gained certain traits over time– pass favorable traits to offspring

18 Lamarck’s Theories Tendency Towards Perfection:
Organisms tend to develop towards complexity and perfection…so they continually change to make them live more successfully. EX: Birds urge to fly and over time…their wings grew in size to be used for flying

19 Lamarck’s Theories Use & Disuse:
organisms can change the size/shape of organs by using their bodies a different way EX: Birds use front limbs more so they could use it them for flying

20 Lamarck’s Theories Inheritance of Acquired Traits:
acquired traits could be inherited by the next generations EX: Bigger front limbs on birds to use for flying…passed down to offspring EX: If you workout and have big muscles…so will your children

21 Famous Example: Giraffe Necks

22 Disproven Theories Lamarck’s theories have been disproven…but at the time these scientists developed these theories they knew very little about genetics and how traits are passed on from generation to generation.

23

24 Journal Week 23- Mon 2/16 No School for students

25 Journal Week 23- Tues 2/17 J: Fathers of Evolution Concept Check (10 pts) Get a clicker and get logged in Take Fathers of Evolution Concept Check, you need to re-write the question and CORRECT answer for the one you got wrong. If you got them all right write “I’m so smart!” TI: Genetics Test Remediation (30 pts), Cover pg and Vocab check (20 pts) CW: Evidence for Evolution Notes , 5 sentence Evidence Debate HW: Evidence for Evolution Review wkst DUE W 2/18 Left Side Pg # Right Side Evidence Debate Paragraph 9 Evidence for Evolution 10

26 Fathers of Evolution Concept Check

27 Question 1 Charles Darwin’s observation that finches of different species on the Galapagos Island have many similar characteristics supports the hypothesis that these finches a.) have the ability to interbreed b.) acquired traits through use and disuse c.) all eat the same type of food d.) descended from a common ancestor

28 Question 2 Which scientist proposed that if an organism used a structure so much that it grew, the trait of that larger structure could be passed to its offspring? (a) Erasmus Darwin (b) Jean-Baptiste Lamark (c) Georges de Buffon (d) Charles Lyell

29 Question 3 When lions prey on a herd of antelopes, some antelopes are killed and some escape. Which part of Darwin’s concept of natural selection might be used to describe this situation? a.) acquired characteristics b.) reproductive isolation c.) survival of the fittest d.) descent with modification

30 Question 4 According to Darwin’s theory of natural selection, the individuals that tend to survive are those that have a.) characteristics their parents acquired through use and disuse b.) characteristics that plant and animal breeders value c.) the greatest number of offspring d.) variations best suited to the environment

31 Question 5 The theory that landforms on Earth’s surface, such as mountains, waterfalls, and canyons, were created as the result of sudden spectacular events is called the theory of (a) uniformitarianism (b) catastrophism (c) gradualism (d) evolution

32 Evidence for Evolution Notes

33 The Evidence of Evolution
1) The Fossil Record 2) Geographic Distribution of Living Species 3) Molecular Biology 4) Homologous Body Structures 5) Similarities in Embryology (Embryos)

34 1) The Fossil Record Fossils: the remains of ancient life
Fossils in different layers of rock that formed at different times in Earth’s history show a change in organisms over time. Layers of rocks have the youngest on top and oldest underneath Darwin asked “ If the Earth could change over time, is it possible for life on Earth to change with it?” Proposed Earth was millions of years old, many species came into being, lived, the vanished.

35 2) Geographic Distribution of Living Species
Remember Darwin’s finches? How were they so similar, but so different? Similar species living in different parts of the world adapt to different traits for survival, particular to their environment, but descend from a common mainland ancestor. Ex. Thick fur for bears in cold climates and thin fur in warm climates. Ex. Short or long beaks, pointed or round beaks

36 3) Molecular Biology Species from different time periods…and initial simpler organisms vs. more complex organisms had similar biochemicals and cell parts. What do you think they shared? DNA (Nucleic Acids) Membranes Cytoplasm Fats, Proteins, Carbs

37 4) Homologous Structures
“Homo” means same Body parts in living species with the same structure and embryonic tissue, but used for different purposes to help with survival Ex. Phalanges…or as we know them “fingers”

38 Homologous Structures Cont.
Ex. 1: If we compare front limbs…we see that bird wings are more similar to one another than any of them to bat wings. The bones that support the wings of bats are more similar to the front limbs of humans, whales, and other mammals, than birds…which helps scientists determine how recently they shared an ancestor. Ex. 2: Dolphins look something like fish, but the homologies show they are mammals…they have lungs and use air to breath, rather than gills and water…How do you breath? You may share a more recent ancestor with Dolphins than fish do?!

39 More Homologous Structures!
Do all Homologous structures serve an important purpose? NOPE!! Vestigial Organs: organs of animals are so reduced in size that they are just vestiges, or traces, of homologous structures. Why keep them with no purpose? One possibility is that the presence of these organs doesn’t affect the organism’s ability to survive and reproduce...so natural selection doesn’t “eliminate” that organ

40 Pics of Vestiges! Tailbones! Femur and Pelvis in a Whale!

41 5) Embryology During the early stages of development, or embryos, many animals with backbones are very similar. So what does this tell us? Same groups of embryonic cells develop in the same order and similar patterns to make the tissues and organs of all vertebrates. These help create the homologous structures! (It all connects!)

42 Here you are! How Cute?!

43 Evidence Debate Paragraph
On pg 9 Write 1 paragraph (5 sentence MINIMUM) explaining which piece of evidence (pick one) you feel is the most effective in explaining evolution.

44 Journal Week 23- Wed 2/18 J: None
TI: Evidence for Evolution Review wkst CW: Five fingers of Evolution, Mechanisms of Evolution Notes HW: Interactive Reader pgs DUE Thurs Left Side Pg # Right Side Pg # Draw the 5 Fingers of Evolution 11 Mechanisms of Evolution Notes 12

45 Five Fingers of Evolution

46 Natural Selection in Populations
Natural selection acts on different phenotypes in a population. In order for natural selection to occur, a population must have different phenotypes to be selected for or against. In this way, a variety of phenotypes makes it more likely that certain individuals will survive different environmental pressures.

47 Categories of Evolution
Microevolution- evolution at the species/ population level Species- group of interbreeding organisms that can produce fertile offspring Population- all the individuals of a species that live in the same area at the same time Macroevolution- evolution within a population over a very long time period

48 Macroevolution vs. Microevolution
These two ideas attempt to explain the difference between small changes (micro) versus large changes (macro). There is really no difference, other than macroevolution takes a very long time and results in profound changes in the species. Microevolution refers to minor changes that can occur within a species in a relatively short period of time, like a change in coloration within a fish population.

49

50 Genetic Variation in Populations
Genetic variation is stored in a population’s gene pool- the combined alleles of all the individuals in a population Examples: Humans have alleles for- blue eyes / brown eyes /green eyes curly/straight hair blood type A / B / O / AB Different combinations of alleles in a gene pool can be formed with organisms mate and have offspring Each allele exists at a certain rate or frequency Allele frequency- the measure of how common a certain allele is in the population

51 Sources of Genetic Variation
Genetic variation comes from two main sources: Mutation- A random change in the DNA of a gene Because there are many genes in each individual and many individuals in a population, new mutations form frequently in gene pools Recombination- parental gametes are rearranged during meiosis

52 Movement of Alleles When an organism joins a new population and reproduces, its alleles become part of that populations gene pool. At the same time, those alleles are removed from the gene pool of its former population Gene Flow- movement of alleles among populations, by migration Increases variation Continued gene flow decreases diversity, gene pools become more similar Can prevent speciation from occurring

53 Example of GENE FLOW Each rat snake represents a separate population of snakes These snake remain similar and can interbreed This keeps their gene pools somewhat similar They are considered subspecies

54 Changing Allele Frequencies
Imagine you have a patch of 100 flowers growing in a field. 50 are white and 50 are purple. If you randomly pick flowers from the patch to create a bouquet, you would expect to pick half white and half purple. The more you pick, the more likely you are to get these numbers The fewer flowers you pick, the more likely you are to have a bouquet that is NOT representative of the patch. It might even be all one color

55 Changing Allele Frequencies
A similar situation can occur in small populations as they are more likely to be affected by chance Due to chance: Some alleles will likely decrease and become eliminated while others increase and become fixed Genetic drift- changes in allele frequency due to chance which causes a loss of genetic diversity in a population

56 Results of Genetic Drift
Bottleneck effect- genetic drift that occurs after a destructive event that leaves only a few survivors, greatly reduces genetic diversity

57 Results of Genetic Drift
Founder Effect- genetic drift occurring after a small number of individuals colonize a new area

58 Founder Effect The founder effect is an example of genetic drift where rare alleles or combinations occur in higher frequency in a population isolated from the general population. Dwarfism in Amish communities Due to few German founders

59 Journal Week 23- Thurs 2/19 J: Bozeman- Selection- 10 facts
TI: Interactive Reader pgs CW: Types of Selection Notes HW: Types of Selection Practice wkst DUE F 2/20 Left Side Pg # Right Side Selection Graphs & Practice 13 Types of Selection Notes 14

60 Types of Selection Natural Selection Sexual selection
Directional selection Stabilizing selection Disruptive selection Sexual selection Artificial selection

61 Natural Selection Not Random Based on 3 conditions:
Variation- differences must exist between individuals, even if slight Heritability- parents must be able to pass on traits to children Differential reproductive success- how many offspring successfully produced

62 Natural Selection Natural selection can only utilize variations that are randomly provided; therefore there is no directedness or anticipation of future needs. Extinction occurs when previous adaptations are no longer suitable to a changed environment.

63 Directional selection
When individuals at one end of the curve have higher fitness than individuals in the middle or other end Example: Darwin’s finches—seed size increases beak size increases Color your diagram

64 Stabilizing selection
When individuals near the center of the curve have higher fitness than individuals at either end Example: Human babies----small babies less healthy, large babies difficulty being born, medium better chance

65 Disruptive selection When individuals at the upper and lower ends of the curve have higher fitness than individuals near the middle. Example: Birds live in area with large and small seeds but not many medium seeds----develop large and small beaks

66 Sexual selection Within-sex competition and choice
Intrasexual selection- competition among males (ex bighorn sheep) Intersexual selection- males display certain traits to attract females (ex peacocks) Not caused by natural selection Differ in mating success Males compete, woman choose Males sperm endless, woman eggs limited Female choose traits that show healthy male- Honest indicators

67 Artificial Selection Humans determine what organisms will breed or not breed Pedigrees Certain flower colors Larger more colorful vegetables Purebred dogs

68 Practice Selection A population of fish has a normal distribution curve of genotype frequencies where a solid pale tan color is homozygous dominant, a striped pattern of light and tan is heterozygous, and a solid dark tan is homozygous recessive. The fish normally live in a mangrove forest where there are dark tree roots in the water growing out of pale sand. Over time, a disease strikes the mangroves and they begin to die, so there are no more roots in the water, just sand. Which fish would now have an advantage in the environment and reproduce more offspring than the other types? What type of selection is this? Explain. Draw a graph that shows the type of selection this demonstrates. How have the genotype frequencies changed? How is this natural selection?

69 Journal Week 23- Fri 2/20 J: How is natural selection different from artificial selection? Give an example of each. TI: Types of Selection Practice CW: Speciation through Isolation & Patterns in Evolution HW: Bozeman- Origin of Life Video Walk through- DUE M 2/23, Interactive Reader pgs DUE Th 2/26 Left Side Pg # Right Side Pg # Speciation Through Isolation Notes 15 Patterns in Evolution Notes 16

70 The Isolation of Populations can Lead to Speciation (pg 15)
If gene flow between two populations stops for any reason, the populations are said to be isolated. As these populations adapt to their environments, their gene pools may change All of these changes add up over many generations and with time, isolated populations become more and more genetically different Species- a group of interbreeding organisms Speciation- formation of a new species

71 Forms of Speciation Two forms of speciation:
Allopatric speciation-interbreeding stops due to a physical barrier (mountain, river) Sympatric speciation- interbreeding stops even though theres no physical barrier

72 Types of Isolation Reproductive Isolation Behavioral Isolation
A. Mechanical Isolation B. Gametic Isolation 1. Prezyotic 2. Postzygotic Behavioral Isolation Geographic Isolation Temporal Isolation

73 1. Reproductive Isolation-Mechanical
A. Mechanical- Morphological differences can prevent successful mating Differences in flower shape and appearance can attract different pollinators (bees, butterflies etc.).

74 1. Reproductive Isolation- Gametic
B. Gametic- Sperm of one species may not be able to fertilize the eggs of another species. 1. Prezygotic- before creating a zygote (fertilized egg) 2. Postzygotic- creates infertile offspring

75 2. Behavioral Isolation Two populations capable of breeding but have different courtship rituals Example: birds with different mating songs

76 3. Geographic Isolation Two populations separated by geographic barriers, rivers, mountains, bodies of water May keep certain organisms separate but not others Example: River keeps squirrels and rabbit populations separate but not birds—who fly over river

77 4. Temporal Isolation Two or more species reproduce during different times of the year Example: Different trees pollinate on different days

78 Patterns in Evolution (pg16)
Evolution through natural selection is NOT random Species can shape each other over time Species can become extinct Speciation often occurs in patterns

79 Evolution is NOT random
Convergent Evolution Two unrelated species evolve in a way that make them more similar Ex: Birds and Bees both have wings Convergent characters- traits that are similar between two unrelated species Divergent Evolution Two related species evolve in a way that makes them less similar

80 Divergent vs. Convergent

81 Species can shape each other over time
Species interact with each other in many different ways. They may compete for the same food source or be involved in a predator- prey relationship. Sometimes the evolutionary paths of two species become connected. These can become competitive Coevolution Predator vs. Prey—2 species evolve together Parallel evolution Similar evolutionary changes occurring in two species that are related or unrelated

82 Species can become extinct
Just as birth and death are natural events in the life of an individual, the rise and fall of a species are natural processes of evolution. Extinction- the elimination of a species from Earth. Often occurs when a species is unable to adapt to a change in the environment There are two categories of extinctions: Background extinction- occur continuously but at a very low rate Mass extinction- destroy many species due to a catastrophic event

83 Patterns of Speciation
Disagreements in pattern of macroevolution (evolution of group of species over a very long period of time) Gradualism- evolutionary progress is slow and steady Punctuated equilibrium- rapid burst of change with long periods of no change Adaptive radiation- rapid evolution of one ancestral species into many descendent species Ex: Darwin’s finches- each occupied a different niche on the galapagoes islands

84 Gradualism vs. Punctuated

85 Journal Week 24- Mon 2/23 J: Bozeman- Evidence for Evolution II- 10 facts TI: Bozeman- Origin of Life Video Walk through CW: Wooly Booger Lab HW: Wooly Booger Lab Analysis Questions DUE W 2/25, Interactive Reader pgs DUE Th 2/26

86 Journal Week 24- Tues 2/24 J: Evolution of Populations Concept Check (20 pts) TI: None CW: Hardy-Weinburg Equilibrium Guided Notes and Natural Selection Simulation HW: Interactive Reader pgs DUE Th 2/26 Left Side Pg # Right Side Natural Selection Simulation 17 Hardy- Weinburg Equilibrium Guided Notes 18

87 Journal Week 24- Wed 2/25 J: none
TI: Wooley Booger Lab Analysis Questions CW: Origin of Life Video, Fossil Record & Origin of Life Guided Notes HW: Interactive Reader pgs DUE Th 2/26, Finish Origin of Life video Questions DUE Th 2/26 Left Side Pg # Right Side Origin of Life Video Questions 19 Fossil Record & Origin Guided Notes 20

88 Fossils & Who Studies Them!
Fossils: traces/remains of ancient life What do we discover? Structures of Organisms Their Diet Who are their predators Environment they lived in Paleontologists: scientists who study fossils Fossil Record: all the info adapted from fossil about past life

89 What does the Fossil Record DO?
Extinct: species die out >99% of all species that lived on Earth The fossil record provides evidence about the history of life on Earth. It shows how different groups of organisms, and species, have evolved.

90 Formation of Fossils Can be large and complete like a perfect sized animal or small life a fragment of a jawbone. Examples: eggs, footprints, animal droppings Most fossils form in sedimentary rock. Sedimentary Rock: formed when rain, wind, heat, and cold break down rock into small particles of sand, silt, and clay. Streams carry these until they settle at the bottom and build layers. Organisms sink & become buried. Weight & chemical reactions turn them to rocks. Quality Varies…why we have gaps!

91 Finding Evidence -Natural forces that made sedimentary rock also can reveal fossils formed millions of years prior, hidden in layers. What are paleontologists looking for? Anatomical Similarities & Differences Age by using 2 techniques Relative Dating Radioactive Dating

92 Relative Dating Relative Dating: age of a fossil is determined by comparing its placement with that of fossils in other layers of rock. Index Fossils: used to compare relative ages of other fossils Index Fossils Criteria: Easy to Recognize Existed for short time Wide geographic range (Found in only a few layers but in different geographic layers) Downfall? No absolute age in years for rocks.

93 Radioactive Dating Scientists use radioactive decay to assign absolute age to rocks Radioactive -> decay or breakdown into non-radioactive at a steady rate -> measured in half- lifes Half-Life: time required for ½ of Radioactive atoms in a sample to decay Radioactive Dating: use of half-lifes to determine the age of the sample

94 Radioactive Dating In radioactive dating, we calculate the age of a sample based on the amount of remaining radioactive isotopes it contains Ex. C-14 ~ 5730 years -> C-12 (Non-RA) More C-12, the older the fossil (up to 60,000years) Ex. K-40 -> Ar-40 ~1.26 billion years

95 The Origin of Life! Biology 1

96 Earth’s Early History Key points to learn:
What substances made up Earth’s early atmosphere? What did Miller & Urey’s experiments show? What occurred when oxygen was added to the Earth’s atmosphere?

97 The Formation of Earth Earth was not born from a single event…Cosmic debris were attracted to one another over time (~100 mil years). While the planet was young, it was struck by objects possibly as large as Mars. These collisions made enough heat to melt the entire globe. Once Earth melted, the elements rearranged according to density, forming Earth’s core. Radioactive decay made enough heat to convert the core to molten rock.. The less dense elements moved towards the top to form the surface, the solid crust. The least dense elements (hydrogen & nitrogen) formed the atmosphere.

98 The Formation of Earth Earth’s early atmosphere probably contained: hydrogen cyanide, carbon dioxide, carbon monoxide, nitrogen, hydrogen sulfide, and water. A few breaths of this would kill you! It has been inferred that ~4 billion years ago the world cooled enough to allow rocks to form on Earth. Volcanoes ruled the Earth for millions of years. ~3.8 billion years ago the Earth cooled enough for water to stay a liquid…and thunderstorms ruled forming the current day oceans.

99 The First Organic Molecules
In the 1950’s, Miller & Urey designed an experiment that attempted to recreate Earth’s early environment. Step 1: Filled a flask with Hydrogen, Methane, Ammonia, and H2O Step 2: Passed electric sparks through mixture to represent lightning. Results: After a few days -> Amino Acids began to accumulate

100 Spectacular Results! Miller & Urey’s experiment showed us that the compounds/elements of life existed in Early Earth. What do we know now? The experiment was not completely accurate With more knowledge, experiments have produced organic compounds 1995, Miller produced cytosine and uracil…what are these?

101 Well…How do we breathe Oxygen now?
Microscopic Fossils (microfossils) of prokaryotic bacteria have been found in rocks 3.5 billion years old and these lived without oxygen! Photosynthetic bacteria were producing oxygen that mixed with ocean water forming rust Rust fell to the floor and is mined today as iron ore. Oxygen formed our atmosphere and turned sky/ocean from brown to blue. Anaerobic (organisms that don’t need oxygen) organisms struggled but aerobic (organisms that need oxygen) organisms did well, were “fit”. The rise of oxygen in the atmosphere drove some life forms to extinction, while others evolved new, more efficient way to use oxygen for breathing.

102 Endosymbiotic Theory: Simple to Complex
Endosymbiotic Theory: eukaryotic cells arose from living communities formed by prokaryotic organisms. The prokaryotes devolved & formed eukaryotic cells. Once these Eukaryotic cells formed, they reproduced Sexually, which allowed for variation of species…which started Evolution!

103 Journal Week 24- Thurs 2/26 J: Bozeman- Microevolution- 10 facts
TI: Interactive Reader pgs , Origin of Life video Questions CW: Hominid Evolution Power Notes & Reinforcement, Origin of Life & Hominid Pencil Book Partner Quiz Get a blue pencil book and get logged into a clicker Read the Origin of Life information on pg 45 then answer questions 1-4 (F=A, G=B, H=C, I=D) Read the Hominid information on pg 48 then answer questions 1-5 (F=A, G=B, H=C, I=D) HW: none Left Side Pg # Right Side Hominid Concept Map 21 Hominid Evolution Notes 22

104 Journal Week 24- Fri 2/27 J: Explain the results found in the Miller Urey experiment. Draw AND label a picture of their experimental set up. TI: Journal Weeks 23 & 24 (50 pts) CW: Evolution Notebook Quiz (50 pts) Update your Table of Contents for the next section HW: Evolution Notebook Quiz DUE M 2/28 Left Side Right Side (23) Classification Chart (24) Classification Notes (25) How to Make a Cladogram (26) Cladograms & Dichotomous Key Notes (27) Cladogram Practice (28) Dichotomous Key Practice (29) Evolution Unit Review (30) Evolution Unit Review

105 Journal Week 25, Monday 3/2 J: Why is classifying organisms or objects helpful/important? TI: Evolution Notebook Quiz (50 pts) CW: Classification Notes HW: Organizing Life’s Diversity Wkst DUE T 3/3 Left Side Right Side (23) Classification Chart (24) Classification Notes

106 Why Classify? Scientist group organisms together so that they are easier to study. Ex. What do you know about a mammal? Animal, with backbone, covered in hair, gets milk from mother, warm blooded ect.

107 Taxonomy Taxonomy: is classifying and assigning organisms universally accepted names. Binomial nomenclature: each species is given a two-part scientific name Created by Carolus Linnaeus Italics: 1st word ‘Genus’, 2nd word ‘species’ Scientist use a single name for each species to reduce confusion.

108 Binomial nomenclature
Genus : closely related species (1st word) Species: Organisms can produce fertile offspring (2nd word) Genus + species (description of trait) Ex. Polar Bear Ursus maritimus Species name + sea

109 What animal is this? Puma, Mountain Lion, Panther
Science name: Felis concolor

110 Linnaeus’s Classification
Taxon: each level in classification system From Largest to Smallest: (Most to Least general) Kingdom, Phylum, Class, Order Family Genus Species. King Philip came over for great spaghetti. Example: several families make up one order and several phylum's make up one kingdom

111 Domains Broadest Taxon: Domain (3), kingdoms fall under these:
Domain Bacteria Domain Archaea Domain Eukarya

112 Early Classification Aristotle had 2 kingdoms Animalia
Plantae (fungi included) Had to add kingdoms to account for Bacteria and Fungi

113 Modern Classification
Linnaeus started with 5 kingdoms, turned into 7 Monera (Bacteria) Eubacteria & Archaebacteria (kingdoms added later) Protista (not plants, fungi, or animals) Fungi (made of chitin, decomposers, mushrooms) Plantae (plants, cell walls, photosynthesis) Animalia (animals)

114

115 Human Classification Kingdom Animalia

116 Human Classification Phylum Chordata

117 Human Classification Class Mammalia

118 Human Classification Order Primates

119 Human Classification Family…. Hominidae

120 Human Classification Genus Homo Species sapiens

121

122 Journal Week: 25, Tuesday, 3/3
J: Bozeman- Cladograms- 5 facts TI: Organizing Life’s Diversity wkst CW: Notes on Cladograms & Dichotomous Keys & Practice HW: Dichotomous Key Wkst DUE Wed 3/4, Evolution Folder DUE M 3/9, Homework Stamp Portfolio DUE M 3/9 (Last day to turn in INC  Fri 3/6) Left Side Right Side (25) How to Make a Cladogram (26) Cladograms & Dichotomous Key Notes (27) Cladogram Practice (28) Dichotomous Key Practice

123 Cladograms Cladogram: a diagram that shows the evolutionary relationship among a group of organisms. Derived characters: Characteristics that appear in recent parts of a lineage but not in older members Used to make cladograms

124 Dichotomous Keys Dichotomous Key: a tool that helps determine the identity of items in the natural world Ex. Trees, Animals, Shells Lists a series of choices that lead the user to the correct scientific name of a given organism. "Dichotomous" means "divided into two parts". Given two choices in each step

125 How to Construct a Dichotomous Key
How many steps will I have? Number of organisms -1 = Number of steps How do I know what to say for (a) and (b)? Choose a dividing characteristic and write (a) and (b) so they do not match/agree. When do I say go to the next step or the animals name? When 1 organism is left, then you write their name…if there is more than 1 organism, direct them to the next step. How many Characteristics do I use per step? 1 Do my starting groups need to be equal? No 

126 Journal Week: 25, Wednesday 3/4
J: Interpreting Graphics Questions TI: Dichotomous Key Wkst CW: Beanie Baby Dichotomous Key Practice HW: Evolution Unit Test Friday, Evolution Folder DUE M 3/9, Homework Stamp Portfolio DUE M 3/9 (Last day to turn in INC  Fri 3/6)

127 Journal Week: 25, Thursday, 3/5
J: Deck of Cards Review Questions TI: none CW: Evolution Unit Review HW: Study for Test, Complete Review, Evolution Folder DUE M 3/9, Homework Stamp Portfolio DUE M 3/9 (Last day to turn in INC  Fri 3/6)

128 Journal Week: 25, Friday, 3/6 J: Test Reflection TI: Check Test Review
Minimum of 5 Sentences describing your thoughts and feelings in regards to the test. TI: Check Test Review CW: Test Evolution Folder DUE M 3/9 Homework Stamp Portfolio DUE M 3/9 (Last day to turn in INC  TODAY) HW: Folder & Stamps DUE M 3/9


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