Evolution (Ch 31) Flashcards

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1
Q

Evolution purpose

A
  1. Gives rise to new species
  2. Driven by natural selection and adaptation
  3. Implies that all life has a common ancestor
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2
Q

Charles Darwin

A

Darwinism = father of evolution
Sailed aboard Beagle = collected and observed natural history

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3
Q

3 voyage influence

A

rainforests of Brazil
Fossils
Birds + reptiles of Galápagos Islands

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4
Q

Animal examples of evolution

A

Insect eater = green warbler finch uses its narrow pointed beak to grasp insects

Seed eater = large ground finch has large beak for cracking seeds

Cactus eater = long sharp beak of cactus ground finch helps its tear and eat cactus flowers and pulp

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5
Q

Who helped Darwin with his manuscripts

A

Alfred Russell Wallace

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6
Q

4 biological evidence

A

Anatomical similarities
Vestigial traits in modern species
Shared embryonic developmental pathways
Fossil Evidence

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7
Q

Anatomical similarities

A

mammalian forelimbs have same set of bones
Structure is similar but functions different

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8
Q

Vestigial traits in modern species

A

vestigial organs are internal organs that serve no useful function
Serves a function in an ancestor population

Ex: appendix, legs in snake

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9
Q

Shared developmental pathways

A

Similar chordate embryos

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10
Q

Fossil evidence

A

Some fossils are more common than others due to certain structures

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