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12 Cards in this Set

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What do chimps and humans share

a most recent common ancestor

What is natural selection and who proposed it?

Darwin




mechanism that causes species to changd

What are the three steps in natural selection

overproduction of offspring




competition for limited resources




survival and reproduction or DEATH




SURVIVAL OF THE FITTEST

If an animal is more fit than another animal what does that mean

it is better adapted to the env. and more likely to be able to successfully reproduce

What usually drives evolution

changes in the environment

What must exist before changes in the env. cause evolution

variation between species

Why does variation occur

sexual reproduction and mutation

Are species with more variation more likely to survive env. changes?

YES




more variation allows for better chance they can adapt to the env. change

What is gradualism theory

change occurs slowly

What is punctuated equilibrium

theory that says evolution occurs in quick spurts

What is geographic isolation and how does it cause reproductive isolation

Animals evolve spearately and variation results that causes changes in reproduction preventing species from being able to reproduce




results in speciation

Where does evidence for evolution come from?

biochemitry




geology




genetics




anatomy




embryology