Which of the following is the most predictable outcome of increased ge ulations? ower average fitness in both populations igher average fitness in both populations ncreased genetic difference between the two populations ecreased genetic difference between the two populations creased genetic drift Mutation is the only evolutionary mechanism that the ultimate source of variation in natural populations oes little to change allele frequencies ecreases fitness more important in eukaryotes than in prokaryotes as no effect on genetic variation

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Q: None

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A:

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A: The correct answer is second one that is genetic drift.

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.