Theory of Evolution Today

Slides:

Advertisements

Similar presentations

1 Evolution Diversity of Life. 2 History of Evolutionary Thought.

Advertisements

EVIDENCE OF EVOLUTION CHAPTER 15-2.

Evidence for Evolution

Evidence of Evolution Chapter 15 Part II.

1 Organisms Change Over Time.  Darwin proposed that organisms descended from common ancestors  Idea that organisms change with time, diverging from.

Evolution Diversity of Life.

Evidence Supporting Theory of Evolution (pages 126 – 133)

Evidence for Evolution Biology 40S Summer Session 2013.

Evidence of Evolution.

AIM: How do comparative studies help trace evolution?

15-3 Evolution in Process.

AP Biology Chapter 15.3 Evidence of Evolution Dodo bird.

LECTURE 9: Evidence for Evolution

10.4 Evidence of Evolution 1 Evolutionary Time Scales Long time scale events that create and destroy species. Macroevolution: Long time scale events that.

Evidence of Evolution Blue-footed booby.

Evidence for Evolution

1 Theory of Evolution Today Supporting Evidence. 2 Homologous Structures.

1 Evolution Diversity of Life. Evolution biological change by which descendants come to differ from their ancestors. biological change by which descendants.

EVOLUTION – change in populations over time HISTORY – ideas that shaped the current theory  James Hutton (1785) – proposes that Earth is shaped by.

1. Natural Selection Driving force for evolution During the struggle for resources, strongest survive & reproduce Idea that at least some of the differences.

Unit 8 Evolution Notes Part 4: Patterns of Evolution & Evidence for Evolution.

Evolution & Natural Selection. First thoughts on the idea… “Acquired Traits” –If you want it you can make yourself have it Once a structure is modified.

1 Evolution Diversity of Life copyright cmassengale.

Date: May 3, 2016 Aim #76: How do comparative studies help trace evolution? HW: 1)Whales in the Making Article Review due Thursday 5/5 2)Relationships.

Evolution Diversity of Life copyright cmassengale.

Evolution by Natural Selection

Evidence of Evolution.

Descent with Modification

Evolution “Nothing in biology makes sense EXCEPT in the light of evolution.” Theodosius Dobzhansky.

copyright cmassengale

Evidence for Natural Selection

Evidence of Evolution Bio Explain how fossil, biochemical, and anatomical evidence support the theory of evolution.

Evidence of Evolution Key Concept

Evolution by Natural Selection

copyright cmassengale

Evidence for Evolution

Evidence of Evolution.

Change in Populations over time

Evidence of Evolution.

EVIDENCE OF EVOLUTION CHAPTER 15-2.

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:

Evidence for Evolution

UNIT 4: Evolution What is the evidence that supports evolution?

Do now activity Define Common Ancestor in your own words.

15.2 assessment answers.

Evolution Diversity of Life.

Evidence for Evolution

Evolution Part 2 Evidence & Types.

Evolution Part 2 Evidence & Types.

Evidence for Evolution

Unit 5 Evolution Evidence of Evolution.

Evidence for Evolution

Bellringer What is genetic drift? What are two mechanisms (ways it is caused) of genetic drift? Once done answering the bellringer question on your sheet,

Evidence for Evolution

Section 4: Evidence of Evolution

EVIDENCE FOR EVOLUTION

March 8, Week # 9 NB-101 Learning Target: I will Homework: Agenda:

What is Evolution? A change in genetic makeup of a population over time You do not have evolution without genetics because by nature genetics leads to.

Evidence of Evolution.

Name 2 vestigial structures in the human body.

UNIT 4: Evolution What is the evidence that supports evolution?

Evolution-Evidence.

Understanding biological Evolution and the Diversity of Life

Evidence of Evolution Chapter 15 Section 3.

Evolution WHAT IS THE THEORY OF EVOLUTION &

Do Now What “theories” are you using to determine the evolution of your fossils?

Evidence of evolution Ch.12 and Ch.13.

Darwin Presents His Case

EVIDENCE OF EVOLUTION Chapter 15-2.

Presentation transcript:

Theory of Evolution Today Supporting Evidence

Fossil Record Earth is billions of years old Fossils in different layers of rock showed evidence of gradual change over time

Geographic Distribution of Living Species Different animals on different continents but similar adaptations to shared environments

Homologous Structures: features that are similar in structure but appear in different organisms and have different functions

Homologous Body Structures Scientists noticed animals with backbones (vertebrates) had similar bone structure May differ in form or function Example: limb bones develop in similar patterns Arms, Wings, Legs, Flippers Develop through divergent evolution

Analogous Structures: structures that perform a similar function (in this example, flight) but are not similar in origin; develop through convergent evolution

Vestigial Structures: remnants of organs or structures that once had a function in an early ancestor

Similarities In Embryonic Development Evidence for Evolution - Comparative Embryology Similarities In Embryonic Development

Chicken Turtle Rat

Human Fetus – 5 weeks

Similarities in DNA Sequence

Evolution of pesticide or antibiotic resistance in response to selection

Evidence for Evolution – Evolution Observed Evolution of drug-resistance in HIV

Evolutionary Time Scales Macroevolution: Long time scale events that create and destroy species.

Evolutionary Time Scales Microevolution: Short time scale events (generation-to-generation) that change the genotypes and phenotypes of populations

p. 34 – Biological Resistance – copy the following questions, and leave spaces for your answers. What do you think biological resistance is? How do you think that the first pesticide resistant tick got here? How could this example of pesticide resistance in ticks be similar to antibiotic resistance among bacteria? Is biological resistance an example of natural selection or artificial selection?

# of Drug Generation: Resistant Ticks: 1 1 2 3 3 8 4 13 5 16 6 18

Biological Resistance Biological Resistance: resistance of a microorganism to a drug that was originally effective for treatment of infections caused by it.

Biological resistance happens through the overuse and misuse of drugs and pesticides.

Speciation Coevolution The evolution of two or more species from a common ancestor Coevolution Two or more species evolve in response to changes in each other