1. LT- Today, I can apply my understanding of the evidence that supports evolution by writing an explanation for each concept of how it is a supporting factor of the theory of evolution. What is the observable evidence that supports the theory of evolution? Do Now: Evolution is a scientific theory. This theory is universally accepted amongst scientists, why do you think it is so widely accepted? (hint: in order to be an accepted theory, what must there be?)

2. Evidence Supporting the Theory of Evolution

3. Who done it? How do you know?

4. Law of superposition- states that in undisturbed rock layers, the lower rock formations are older than a rock layer above it. Fossils- the remains of once living organisms.

5. How does the Law of Superposition and Fossil Remains Help us Understand How Life has Changed Over Time?
What is some of the information that we can gain about fossils of organisms and life over time? Explain how scientists know that life started off simple and got more complex. Can they tell if a species has gone extinct? Can they tell if a new species has evolved?

6. Describe one piece of evidence in the diagram that shows rock layer A formed after rock layer B. Are the rock layers shown most likely igneous, metamorphic, or sedimentary? Circle your answer below and describe one piece of evidence in the diagram that supports your answer. Circle one: igneous metamorphic sedimentary Evidence:

7. 1. Fossil Evidence
FOSSILS SHOW:
How life has changed over time.
How life has gone from simple to complex over geological time.
Similarities in species.
Extinction of species
The arrival of new species (if it wasn’t there before, where did it come from?)
The change in species over time.

8. 2. Comparative Anatomy The study of similarities and differences among structures of living species

9. What do you notice about these homologous structures
What do you notice about these homologous structures? Consider the structure and function of each How is this evidence of evolution?

10. Homologous Structures Body parts of organisms that are similar in structure and position but different in function. i.e. Same or similar structures, different functions.

11. Homologous Structures
These structures show that these organisms started with the same basic body plan,
but the structures have mutated over time leading to having different functions.

12. What do you notice about these analogous structures
What do you notice about these analogous structures? Consider the structure and function of each How is this evidence of evolution?

13. i.e. Same functions, different structures
Analogous Structures Body parts that perform similar functions but differ in structure.
i.e. Same functions, different structures

14. These structures show that the environment is a selecting agent
These structures show that the environment is a selecting agent. Certain traits within an environment will give an advantage. Through random mutations these traits in unrelated organisms are selected by the environment.

15. What do you notice about these vestigial structures
What do you notice about these vestigial structures? Consider the structure and function of each How is this evidence of evolution?
Humans have a tail Human embryos bone but no tail have gill slits but we breathe with lungs

16. Other Vestigial structures in Humans

17. Vestigial Structures Body parts that have lost their original function or the original function has been reduced through evolution. If the organism does not currently use the structure, it must have come from an ancestor that did.
All animals have vestigial structures, but some in humans are: The coccyx, or the tail bone. Obviously, humans no longer have visible external tails since the current version of humans do not need tails to live in trees as earlier human ancestors did. The appendix Goose bumps Gills (present during early fetal development)

18. Identify the Species of the Embryo Which embryo is a Human, Tortoise, Lizard, or Pig?

20. What do you notice about these embryos structures
What do you notice about these embryos structures? Consider the structure and function of each How is this evidence of evolution?

21. 3. Developmental Biology
Embryology The science of the development of embryos from fertilization. Similarities in embryo development (physical similarities, stages of development) of different species suggests an evolutionary relationship.

23. Natural selection Consider the structures and functions within a species How is this evidence of evolution?

24. 4. NATURAL SELECTION. Mutations lead to variation
4. NATURAL SELECTION Mutations lead to variation Those members of the same species with the more suitable traits will survive and pass on their genes.

25. What do you notice about these organisms that reproduce quickly
What do you notice about these organisms that reproduce quickly? Consider the structure and function of each How is this evidence of evolution?

26. 5. ORGANISMS that REPRODUCE QUICKLY
The change in species over time that leads to a new species is observed in organisms such as bacteria.

27. What do you notice about the DNA fingerprints
What do you notice about the DNA fingerprints? Consider the structure and function of each How is this evidence of evolution?

28. 6. DNA
With modern understanding of DNA, scientists have observed that all organisms share a percentage of identical DNA (code for making proteins). Organisms that are more closely related, share more DNA. The more proteins you have in common, the more closely related you are.

29. LT- Today, I can connect scientific concepts by using the theory of evolution to explain the trends of antibiotic resistance. How do bacteria become resistant to antibiotics? Do now: Use your understanding of evolution to determine what came first, the chicken or the egg.

31. The first question of part B-2 is usually a graphing question.
When you create the graph:
Mark an appropriate scale
determine the range of your numbers for the axis
deptermine the number of lines you have
divide the number of lines you have by the range
No breaks
Label your axis
Title