Which environmental factor would likely lead to an increase in genetic variation in a population of squirrels?

an increase in predators
an increase in available food
an increase in forest fires
an increase in pollution

The correct answer is option B, an increase in available food

Explanation:

Genetic variation is caused primarily due to three factors –  

a)Mutation – Any change in DNA  

b)Gene flow - movement of genes from one population to another

c)Sex - new gene combinations into a population

A species getting good food source( ensuring proper nutrition) would enhance the health and survival rate of a species. A healthy species then enters into sexual relationships with other species thereby producing several gene combinations. The higher the sexual interactions, the higher is the genetic variation.  

the answer is b. 0; 4

well, you see. the answer to your question is quite simple. the thing that is big, powerful, and over 9,000 is your mom.