How Can We Best Understand Darwin’s Theory?

Slides:

Advertisements

Similar presentations

Darwin Presents His Case

Advertisements

Ch 16.3 (Pg ): Darwin Presents His Case

 1859 ( 28 years after the Beagle)  Darwin proposes a mechanism to explain the complexity of life.  Theory: evolution has been going on for millions.

In your own words, provide the essential points of Charles Darwin’s theory of evolution by natural selection (descent with modification).

What does each picture show? What is the same in the pictures?

DARWIN. DESCENT WITH MODIFICATION All species of organisms living on Earth today are descended from ancestral species All species of organisms living.

HAPPY THURSDAY Bellwork: How many bright stars do you see on each square? Black stars on each square? What is this an example of?

Darwin Presents His Case 15-3

HAPPY TUESDAY Bellwork: Write down only the bolded red portion and your answer. Two species of mice live in a field in the middle of East Texas. One mouse.

The Theory Evolution via natural selection How did different organisms arise? How are they related? Listen to the audio portion of this lecture by viewing.

Good Afternoon 9/28/15 Do Now – analysis of phylogeetic tree Write down HW Who shaped Darwin’s thinking (ppt take out notebook) Reading: A Sample Study.

Darwin’s Theory. 1. Individual organisms differ and some of this variation is heritable.

Natural Selection and Evolution!. Why two types of clover? What advantages does the striped clover have? The plain? How does cyanide help/hurt these plants.

Unit 7-Change with Time (Evolution). Evolution ► Change With Time ► The development of new types of organisms from pre-existing types of organisms over.

Charles Darwin ( ) Sailed around the world

Bellwork: Fix your Line Graphs. Look at the example provided of what it should look like. On your bellwork write “Bean Lab Line Graph”. HW: Prepare a line.

Chapter 15-3: Darwin Presents His Case

Theory of E v o l ut i o n Chapter 15. What is Evolution? Change over time The process by which modern organisms have descended from ancient organisms.

Evolution The Puzzle of Life’s Diversity. Charles Darwin Proposed the Theory of Evolution Proposed the Theory of Evolution The father of evolution The.

Chapter 15: The Theory of Evolution

Collect evidence ON YOUR OWN – QUIETLY ( 10 min) 10/19/15Page 31 Explaining Evolution – Charles Darwin LT: I will be able to explain who Charles Darwin.

How Did Darwin Explain Evolution? Hw: Rd 418 – 422 Q 1-4 p 422.

Artificial Selection -vs- Natural Selections

Darwin “Natural Selection”. Natural Selection: The process by which individuals that are better adapted to their environment are more likely to survive.

7.5 On the Origin of Species Pages Charles Darwin On the origin of Species published in 1859.

Natural Variation & Artificial Selection. Natural Variation & Artifical Selection Darwin, through many observations, explained evolution by natural variation.

Darwin’s Theory of Natural Selection. POINT > Review the ideas that shaped Darwin’s thinking POINT > Describe postulates that underlie natural selection.

Unit 2: Evolution Learning Goal 2: Describe the effects of environmental factors on artificial and natural selection.

Darwin’s Theory of Evolution. What is Darwin’s Theory of Evolution? Introduced the idea that the environment (nature) selects an organisms traits – Natural.

The Theory of Evolution by Natural Selection

Theory of Natural Selection Power Notes

15-3 Darwin presents his case

Darwin’s Quick Points!.

Evolution Chapter 15.

Lessons Divided by Standard

By: Mr. Godinez.

The Theories of Evolution

Chapter 16: Darwin’s Theory of Evolution

Darwin’s Theory of Evolution

15.1Darwin’s Theory of Evolution by Natural Selection

Natural Variation & Artificial Selection

Natural Variation & Artificial Selection

Charles Darwin and Natural Selection

Natural Selection Struggle for Existence Survival of the Fittest

Natural Variation & Artificial Selection

NATURAL SELECTION The Struggle for Existence - Darwin realized that high birth rates and a shortage of life's basic needs would force organisms to compete.

Natural Selection Struggle for Existence Survival of the Fittest

16.3 Darwin Presents His Case

This is Evolution.

Darwin's Theories.

Section 4: Evidence of Evolution

EVIDENCE FOR EVOLUTION

Darwin’s Theory of Evolution by Natural Selection

Evolution, Darwin & Natural Selection

Evolution vocab.

15-3 Darwin Presents His Case

Darwin Presents His Case

Notes: Theory of Evolution

Evidence of Evolution Darwin argued that living things have been evolving on Earth for millions of years. Evidence for this process could be found in the.

The Theory of Evolution by Natural Selection

Natural Selection.

Big Idea: The types and characteristics of organisms change over time.

Natural Selection.

The Puzzle of Life’s Diversity

Theory of Natural Selection

Darwin Presents His Case

Darwin Presents His Case

Aim: What are the main ideas of Darwin’s theory of natural selection

Presentation transcript:

How Can We Best Understand Darwin’s Theory?

We are all very different Individual organisms in nature differ from one another. Some of this variation is inherited

Some of us won’t make it. Organisms in nature produce more offspring than can survive, and many of those that survive do not reproduce.

Competition Because more offspring are produced than can survive, members of each species must compete for limited resources

Advantages and Disadvantages Because each individual organism is unique, each has specific advantages and disadvantages in the struggle for existence.

Survival of the Fittest Individuals best suited to their environment survive and reproduce most successfully. These traits are passed on to their offspring. Individuals who are not well suited to their environments die or leave fewer offspring

Living Things Change Species change over time. Over long periods, natural selection causes changes in the characteristics of a species, such as in size and form. New species arise and other species disappear.

Descent with Modification Species alive today have descended with changes from species that lived in the past

We are all related All organisms on Earth are united into a single tree of life by common descent.