# What 4 factors influence a population’s allele frequency?

Contents

The Hardy-Weinberg equilibrium principle says that allele frequencies in a population will remain constant in the absence of the four factors that could change them. Those factors are natural selection, mutation, genetic drift, and migration (gene flow).

## What are the 4 factors that cause a change in allele frequency in a population?

From the theorem, we can infer factors that cause allele frequencies to change. These factors are the “forces of evolution.” There are four such forces: mutation, gene flow, genetic drift, and natural selection.

## What are the factors that influence allele frequency?

Five factors are known to affect allele frequency in populations i.e., Hardy-Weinberg equilibrium. These are gene migration or gene flow, genetic drift, mutation, genetic recombination and natural selection. Gene migration or gene flow – it is movement of alleles into a gene pool or out of a gene pool.

## What are 4 factors that provide genetic variation?

Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism’s offspring).

## What are the 4 mechanisms of evolution?

They are: mutation, non-random mating, gene flow, finite population size (genetic drift), and natural selection.

## What is the frequency of allele A?

The frequency of the “a” allele. Answer: The frequency of aa is 36%, which means that q2 = 0.36, by definition. If q2 = 0.36, then q = 0.6, again by definition. Since q equals the frequency of the a allele, then the frequency is 60%.

## What are the 5 assumptions of the Hardy Weinberg equilibrium?

The Hardy–Weinberg principle relies on a number of assumptions: (1) random mating (i.e, population structure is absent and matings occur in proportion to genotype frequencies), (2) the absence of natural selection, (3) a very large population size (i.e., genetic drift is negligible), (4) no gene flow or migration, (5) …

## What are the factors influencing allele frequency or deviations from Hardy-Weinberg equilibrium?

-The factors that affect the genetic equilibrium and induce the variability in the population are as follows: mutations, recombinations during sexual reproduction, genetic drift, gene migration or gene flow, and natural selection.

## What are the factor affecting the Hardy-Weinberg equilibrium?

The Hardy-Weinberg equilibrium can be disturbed by a number of forces, including mutations, natural selection, nonrandom mating, genetic drift, and gene flow. For instance, mutations disrupt the equilibrium of allele frequencies by introducing new alleles into a population.

## What are the factors that affect genotype and allele frequency in a population?

The four factors that can bring about such a change are: natural selection, mutation, random genetic drift, and migration into or out of the population. (A fifth factor—changes to the mating pattern—can change the genotype but not the allele frequencies; many theorists would not count this as an evolutionary change.)

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## What are the 4 5 mechanisms generally accepted for how life evolves?

There are five key mechanisms that cause a population, a group of interacting organisms of a single species, to exhibit a change in allele frequency from one generation to the next. These are evolution by: mutation, genetic drift, gene flow, non-random mating, and natural selection (previously discussed here).

## What is the allele frequency for the F allele in this population’s gene pool quizlet?

Since the gene pool has 200 total alleles, the allele frequency for the F allele is 140 / 200 = 0.7. As in the previous question, suppose there is a population of 100 rabbits that have different fur patterns. In this population several generations ago, there were 60 FF rabbits, 20 Ff rabbits, and 20 ff rabbits.

## How does migration affect allele frequencies?

Migration will change gene frequencies by bringing in more copies of an allele already in the population or by bringing in a new allele that has arisen by mutation.