Question

State and explain any three factors affecting allele frequency in populations.

Answer 1

Answer:

Gene flow : It is addition or deletion of alleles from a population due to exit or entry of a population.

Genetic drift: It is the change in the allele numbers and allele frequency caused by small size of the population that has been left due to separation or destruction.

Answer 2

Answer:

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Explanation:

• a) Gene flow:- It is addition and deletion of alleles from a population due to exit or entry of a population.
• b) Genetic drift:- It is the change in the allele numbers and allele frequency caused by small size of population that has been left due to separtion and destructure. The small gene pool change future due to inbreeding which will fix certain alleles and eleminate others.
• c) Natural selection:- Eleminate individual with inferior genotype and allows individuals with better genotypes to survive and reproduce.Alleles with selective advantage will increase the gene pool.