Genetic Variation

Mutation is the random change in the DNA sequence of an organism, which can result in new traits or characteristics.

Transversion is not a type of mutation. Substitution, deletion, and insertion are all types of mutations that can occur in DNA.

Gene flow is the process by which genetic material is transferred from one organism to another, typically through mating or migration.

Recombination is the process by which genetic material is exchanged between homologous chromosomes during meiosis, resulting in new combinations of alleles.

Genetic drift is the random change in the frequency of alleles in a population over time, due to chance events such as birth, death, and migration.

Natural selection is not a factor that can contribute to genetic drift. Small population size, non-random mating, and gene flow are all factors that can contribute to genetic drift.

Natural selection is the process by which natural selection acts on a population, resulting in the survival and reproduction of individuals with favorable traits.

Sexual selection is not a type of natural selection. Directional selection, stabilizing selection, and disruptive selection are all types of natural selection.

Hardy-Weinberg equilibrium is the process by which genetic variation is maintained in a population, under the conditions of no mutation, no gene flow, no genetic drift, and random mating.

Non-random mating is not a condition for Hardy-Weinberg equilibrium. No mutation, no gene flow, and no genetic drift are all conditions for Hardy-Weinberg equilibrium.

Genetic diversity is the measure of the genetic variation of a population, and is typically measured by the number of alleles at a given locus, the heterozygosity of the population, or the genetic distance between individuals.

Increased susceptibility to disease is not a benefit of genetic diversity. Increased resistance to disease, increased adaptability to environmental change, and increased productivity are all benefits of genetic diversity.

Genetic erosion is the loss of genetic diversity from a population, typically due to habitat loss, fragmentation, or overexploitation.

Gene flow is not a cause of genetic erosion. Habitat loss, fragmentation, and overexploitation are all causes of genetic erosion.

Adaptive radiation is the rapid evolution of a population in response to a strong selective pressure, resulting in the diversification of the population into multiple new species.