2019 EvolutionMechanism of Evolution – Natural Selection Medium Question 2 of 2 in Mechanism of Evolution – Natural Selection

In a species, the weight of newborn ranges from 2 to 5 kg. 97% of the newborn with an average weight between 3 to 3.3 kg survive whereas 99% of the infants born with weights from 2 to 2.5 kg or 4.5 to 5 kg die. Which type of selection process is taking place?

A Directional Selection
B Stabilizing Selection
C Disruptive Selection
D Cyclical Selection

The answer is B.

Solution

Concept stabilizing selection

Mechanism of Evolution – Natural Selection in past papers

2 questions from this chapter have appeared across 2 exam years.