In a species, the weight of newborn ranges from 2 to 5kg. 97% of the newborn with an average weight between 3 to 3.3kg survive whereas 99% of the infants born with weight from 2 to 2.5kg or 4.5 to 5kg die. Which type of selection process is taking place?
- ADirectional Selection
- BStabilizing Selection
- CDisruptive Selection
- DCyclical Selection
Solution & Step-by-step Explanation
In Stabilizing Selection, nature favors the intermediate/average phenotype and acts against the extreme phenotypes. Here, the survival rate is highest for the average weight (3−3.3kg) and lowest for the extremes (2kg or 5kg), narrowing the distribution curve.