#Question id: 4608
#Unit 11. Evolution and Behavior
What must be true of any organ described as vestigial?
#Question id: 4609
#Unit 11. Evolution and Behavior
Pseudogenes are ________.
#Question id: 4610
#Unit 11. Evolution and Behavior
It has been observed that organisms on islands are different from, but closely related to, similar forms found on the nearest continent. This is taken as evidence that ________.
#Question id: 4611
#Unit 11. Evolution and Behavior
Given what we know about evolutionary biology, we expect to find the largest number of endemic species in which of the following geological features, which have existed for at least a few million years?
#Question id: 4612
#Unit 11. Evolution and Behavior
The greatest number of endemic species is expected in environments that are ________.
#Question id: 4613
#Unit 11. Evolution and Behavior
The questions below refer to the following evolutionary tree, in which the horizontal axis represents time (present time is on the far right) and the vertical axis represents morphological change. Which species is most closely related to species W?