NEET2017ZoologyEvolutionActual
Artificial selection to obtain cows yielding higher milk output represents
Options
- AStabilizing selection as it stabilizes this character in the population
- BDirectional as it pushes the mean of the character in one direction
- CDisruptive as it splits the population into two one yielding higher output and the other lower output
- DStabilizing followed by disruptive as it stabilizes the population to produce higher yielding cows
Correct answer
B. Directional as it pushes the mean of the character in one direction
Step-by-step solution
Artificial selection to obtain cow yielding higher milk output will shift the peak to one direction, hence, will be an example of Directional selection. In stabilizing selection, the organisms with the mean value of the trait are selected. In disruptive selection, both extremes get selected (more individuals acquire peripheral character value at both ends of the distribution curve).