Which of the following contributes to genetic variability within a population?

i. genetic drift
ii. gene flow
iii. mutations
iv. non-random mating

III.mutations

Genetic variation can be defined as genetic differences that occurs within a population. Genetic variations are the differences in DNA segments or genes that occur in a population. The genetic variations makes individuals different from each other at the genetic or genomic level. Mutation is an alteration in the genetic material of an organism. A mutation can occur when the DNA is being copied during replication or because of environmental factors. Mutations contributes to genetic variability within a population.

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

1. a tropical dry forest carries out more rapid nutrient cycling