Humans often use methods of artificial selection, such as selective breeding, to produce horses with specific traits.

Question

Which statement best describes how selective breeding helps horse breeders produce the most desirable traits for racing?   

A

Selective breeding produces horses with a higher rate of survival due to an increase in the genetic diversity of the horse offspring.

B

Selective breeding helps breeders control which traits are passed on by producing horse offspring that only have the desired traits.

C

Selective breeding uses two horse parents with the desired traits to increase the chances of passing the desired traits on to offspring.

D

Selective breeding uses two horse parents with unknown traits to produce offspring with genetic variations and different traits.

Answer 1

Each trait has two genes so it is not easy to get purebreds or homozygous trait animals. By selecting two animals with the desired expressed trait, there still isn’t be a “hidden” recessive trait but the dominant trait is there so it increases the chance of getting offspring with the desired trait. It is not guaranteed since there are mutations and environmental influences on genes. C