Question

Artificial selection to obtain cows yielding higher milk output represents

• A. Directional as it pushes the mean of the character in one direction
• B. Disruptive as it splits the population into two, one yielding higher output and the other lower output
• C. Stabilizing followed by disruptive as it stabilizes the population to produce higher yielding cows
• D. Stabilizing selection as it stabilizes this character in the population

Answer 1

The correct option is A Directional as it pushes the mean of the character in one direction

Organisms with traits on one side of the mean in their population are favoured, this type of selection is called directional selection.

Artificial selection to obtain cows yielding higher milk output is selective mating which is done deliberately to obtain a particular trait.

It can also be considered as an artificial form of natural selection where one phenotype is favored over other phenotypes that pushes the mean of the frequency of the selected individual in one direction.

Hence the correct option is
a. Directional as it pushes the mean of the character in one direction