Question

UESTION 27

1. "When Dmitry Belyaev was selectively breeding silver fox for tameness or temperament, other traits such as floppy ears, shorter legs and broader skulls, also started increasing in frequency within the population. Here, floppy ears, shorter legs and broader skulls are examples of ___________. "

   		byproducts
   		artificial selection
   		adaptive accumulations
   		drift

Answer 1

Artificial selection is the right answer.

The artifical selection occurs when there is found breeding for a particular trait. The individual in which desired traits are found crossed to each other to obtain the desired result in progeny. This is done in a repeated manner. In this way, the frequency for desired trait increases in the population.

Here Dmrity do the selective crossing between the individual for floopy ears, shorter legs and broader skull. The specific trait bearing individual are crossed. That's why this is the case of artificial selection.