Question

When a genetic bottleneck happens, a species’ population _________ . It’s unlikely that the species will have a high degree of __________ , a population characteristic that provides a species with a greater chance of surviving changes to its environment.
1.
A. increases slowly
B. Declines rapidly
C. Remains constant for long periods of time

2.
A. Genetic diversity
B. Mutations
C. sexual selection

Answer 1

The correct options are as follows;
1. B.
A genetic bottle neck is said to occur when there is a sharp reduction in the size of a population as a result of environmental hazardous events [ such as earthquake, flood, fire outbreak, diseases, etc] or human activities. Genetic bottleneck leaves smaller variations among the surviving living organisms.
2. A.
Genetic diversity refers to the total number of genetic characteristics in the genetic make up of a specie. Genetic diversity help organisms to adapt to their changing environment. Genetic bottleneck usually leads to reduced genetic diversity.