You capture several interesting insects from a population in your yard. By inbreeding, you develop true breeding strains that differ only in the shape of their wings - one strain has round wings while the other strain has oval wings. How might you demonstrate that Mendel's principles apply to your insects?

#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?

#Question id: 4614

#Unit 11. Evolution and Behavior

Which of these is the extant (that is, living) species most closely related to species X?

#Question id: 4615

#Unit 11. Evolution and Behavior

Currently, two of the living elephant species (X and Y) are placed in the genus Loxodonta, and a third surviving species (Z) is placed in the genus Elephas. Assuming this classification reflects evolutionary relatedness, which of the following is the most accurate phylogenetic tree?