Week 2

Question 1

Homoplasy

Answer 1

A shared character state that has not been inherited from the same direct common ancestor

Question 2

Convergent evolution

Answer 2

Whales and penguins share flippers as limbs but do not share same direct ancestor
- they share this trait bc evolutionary convergence to be able to swim

Question 3

2 kinds of homoplasy

Answer 3

Evolutionary reversal

Convergent evolution

Question 4

Evolutionary reversal

Answer 4

Snakes and lampreys dont have limbs and do not share the same direct common ancestor
- absence of limbs is an evolutionary reversal in snakes that shows adaptation to crawl