LIFE SCIENCE

Detailed explanation-1: -DNA mutation causes genetic variation by altering the genes of individuals in a population. Gene flow leads to genetic variation as new individuals with different gene combinations migrate into a population. Sexual reproduction promotes variable gene combinations in a population leading to genetic variation.

Detailed explanation-2: -Which of the following will promote variation in a species? Explanation: Meiosis, through crossing over and segregation of chromosomes, will create variation in the gametes of a species.

Detailed explanation-3: -Stabilizing selection: Stabilizing selection occurs when the population stabilizes on a particular trait value and genetic diversity decreases.

Detailed explanation-4: -Mutation. First, variation can come from random mutation, or changes in our DNA. Gene Flow. Sometimes, even if there are not random mutations, the overall genetics of a population can change through migration. Sexual Reproduction. The last way that variation arises is through sexual reproduction.