The figure below represents a map of 3 islands (labelled A, B, and C). The allele frequencies for one gene (with two alleles, H and h) in populations of a plant species found on all 3 islands is given for each island. A survey shows that the population sizes of the plant species for the three islands are A = 100, B = 1000, C = 10,000. On which island are the allele frequencies most likely the result of genetic drift? H = 0.95 h = 0.05 H = 0 h = 1.0 H = 1.0 В h = 0

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Genetic Variation

Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.

Quantitative Genetics

Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.