Question

Which one is raw material for evolutionary change?

• A. Reshuffling of gene combinations
• B. Variability of gene pool
• C. Unrestricted gene flow
• D. Balancing selection

Answer 1

The correct option is B Variability of gene pool

Variation in the gene pool occurs when one gene in the organism is mutated. If it allows the organism to survive longer than the others in the population without the mutation, it gives the mutated organism a higher chance to pass on its genes. If this variation is disadvantageous for survival, organisms will have lower chances to pass on its gene. This goes on throughout different generations which leads to evolution.

So, the correct answer is ' Variability of gene pool '