Starting from a single wild canine species, humans have developed hundreds of breeds of domestic dogs. Which statement is supported by this observation?

Question

A.
Natural selection had not occurred very frequently in the wild dog populations.

B.
Heritable variation is low; otherwise, there would be more wild dog species.

C.
Most of the variation in domestic dog species is a result of variation in nutrition and training.

D.
There was enough inherited variation in the wild for canine species to create a variety of features.

Answer 1

The statement supported by the observation that humans have developed hundreds of breeds of domestic dogs from a single wild canine species is:

D. There was enough inherited variation in the wild for canine species to create a variety of features.

This statement acknowledges that the genetic diversity present in the original wild dog population provided the necessary variations that could be selectively bred by humans, leading to the development of the many different domestic dog breeds we see today.