Evolution (Ch 31)

Question 1

Evolution purpose

Answer 1

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

Question 2

Charles Darwin

Answer 2

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

Question 3

3 voyage influence

Answer 3

rainforests of Brazil
Fossils
Birds + reptiles of Galápagos Islands

Question 4

Animal examples of evolution

Answer 4

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

Question 5

Who helped Darwin with his manuscripts

Answer 5

Alfred Russell Wallace

Question 6

4 biological evidence

Answer 6

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

Question 7

Anatomical similarities

Answer 7

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

Question 8

Vestigial traits in modern species

Answer 8

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

Ex: appendix, legs in snake

Question 9

Shared developmental pathways

Answer 9

Similar chordate embryos

Question 10

Fossil evidence

Answer 10

Some fossils are more common than others due to certain structures