A group of dog breeders is trying to design and develop an ideal dog. They want a dog with a gentle disposition, black fur, long ears, short legs, and a strong sense of smell. Which of the following comments from fellow dog breeders represents the biggest challenge they are likely to face?
A) There are breeds with long ears and breeds with short legs, but no breeds with both.
B) There does not seem to be any genetic variation in sense of smell.
C) Artificial selection is artificial and cannot change the genetics of a breed like natural selection.
D) Most dogs with black fur have long legs.

Question

Quizplus · Accepted Answer

The biggest challenge the dog breeders are likely to face is the lack of genetic variation in sense of smell. While they may be able to breed for gentle disposition, black fur, long ears, and short legs, the sense of smell is more difficult to control and may not have much variation to work with.

A Group of Dog Breeders Is Trying to Design and Develop