Darwin & Lamarck

Evidence 1 Evidence 2Models of Evolution

DNA Speciation

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Final Jeopardy

Final Jeopardy Category

Final Jeopardy

answer

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Survive and Reproduce

Charles Darwin new that organisms had traits and

behaviours that allowed them to do what?

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A single species or common ancestor

Darwin Argued that all existing species originated

from what?

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Adapting to their environments

Darwin thought that evolution was the result of

organisms doing what?

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The origin of species

What was the name of Darwin’s most famous book?

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1) All organisms have a desire to change and will act on this

2) Assumption of use and disuse

3) Acquired traits are handed down from one generation to the next

List Lamarck’s 3 assumptions about evolution

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Fossil Records

What is the only direct evidence of evolution?

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Embryology

Homologous structures

Vestigial Structures

What are 3 indirect types of evidence of evolution?

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Appendix

Wisdom Teeth

Ear wiggling muscles

What is an example of a vestigial structure in humans?

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Embryos of different organisms are the same at early stages of development. This suggest they have come from a common

ancestor

How is embryology evidence of evolution?

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They show that changes have occurred within organisms, show that organisms have a common ancestor, shows that

enough time has passed for evolution to occur

Why are fossils direct evidence of evolution?

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Homologous structures show that organisms have a recent common ancestor

Why are homologous structures used as evidence of

evolution?

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They are structures that no longer have a function

What is a vestigial structure?

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Body parts that have a similar structure but have different functions

What are homologous Structures?

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Body parts that have different structures but the same function

What are analogous Structures?

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It takes time for evolution to occur. It requires people to be born with out the

structure and mate with others born with out the structure

Why do some vestigial structures still exist?

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Gradual and Punctuated Equilibrium

What are two models of evolution?

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It means that the species is in a period where it is not changing because it is suited

to its environment

What does equilibrium mean when referring to a species?

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A species is in a state of equilibrium for an extended period of time followed by a brief and rapid period of change that produces a

new species

Explain Punctuated Equilibrium

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It is a model of evolution that is based on slow and steady changes

What is gradualism?

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It is the permanent disappearance of a species

What is extinction?

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A Double Helix

What is the shape of DNA?

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1) Adenine 2) Thymine 3) Cytosine 4) Guanine

What are the four nitrogenous bases of DNA?

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Cytosine

What base pairs with Guanine?

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Phosphate, Sugar, Nitrogenous Base

What are the three parts of a DNA nucleotide?

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Mutations that occur during replication cause the variations that evolution can act

on

Why does DNA play and important role in evolution?

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Speciation is the creation of new species from a single original species

What is Speciation?

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It is the adaptation of structures that perform the same function due to

adaptations to similar environments

What is convergent evolution?

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It is when one species gives rise to many different species

Adaptive Radiation

What is divergent evolution?

What is another name for it?

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It is the survival of the fittest. Organisms that have traits that are best suited to an

environment survive to reproduce and those traits are then passed on

What is natural selection?

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Ancestors, separation of populations, changes in the gene pool, reproductive

isolation, sharing the same environment

What are the 5 steps of speciation?

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Daily Double

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Daily Double

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The Jeopardy The Jeopardy Champion!Champion!