Genetic variation is determined by:

Correct option is C

Genetic Variation:
· Genetic variation refers to differences in DNA sequences among individuals within a population. It is essential for evolution and adaptation.
Role of Natural Selection:
· Natural selection acts on genetic variation by favoring traits that improve survival and reproduction in a specific environment.
· It leads to adaptive changes in allele frequencies over time.
Role of Genetic Drift:
· Genetic drift refers to random changes in allele frequencies in a population, especially in small populations.
· It can lead to loss of genetic variation or fixation of alleles regardless of their advantage.
Other Factors Contributing to Genetic Variation:
· Mutation: Introduces new alleles into a population.
· Gene Flow: Movement of alleles between populations due to migration.
Information Booster: 1. Sources of Genetic Variation:
· Mutations, recombination during sexual reproduction, and gene flow.
2. Types of Selection Influencing Variation:
· Stabilizing Selection: Reduces variation by favoring intermediate traits.
· Directional Selection: Shifts allele frequencies toward a particular trait.
· Disruptive Selection: Increases variation by favoring extreme traits.
3. Importance of Variation:
· Enables populations to adapt to changing environments.
· Provides the raw material for evolution.