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## What does it mean if a gene is in Hardy-Weinberg equilibrium?

The Hardy-Weinberg equilibrium is a **principle stating that the genetic variation in a population will remain constant from one generation to the next in the absence of disturbing factors**.

## How do you determine genetic equilibrium?

We can check if a population is in genetic equilibrium by **testing if the Hardy-Weinberg principle applies**, as follows: Given the population genotype numbers, (1) calculate the allele frequencies from the observed population genotype numbers. (2) calculate the genotype frequencies from the observed genotype numbers.

## What is required for Hardy-Weinberg equilibrium?

The conditions to maintain the Hardy-Weinberg equilibrium are: **no mutation, no gene flow, large population size, random mating, and no natural selection**.

## What are the 4 conditions of Hardy-Weinberg equilibrium?

The Hardy-Weinberg model states that a population will remain at genetic equilibrium as long as five conditions are met: (1) No change in the DNA sequence, (2) No migration, (3) A very large population size, **(4) Random mating, and (5) No natural selection**.

## What does it mean if a population is in genetic equilibrium?

Genetic equilibrium is a **condition where a gene pool is not changing in frequency across generations**. This is because the evolutionary forces acting upon the allele are equal. As a result, the population does not evolve even after several generations.

## How do you know if a population is in equilibrium?

A population of alleles must meet five rules in order to be considered “in equilibrium”: 1) No gene mutations may occur and therefore allele changes do not occur. 2) There must be no migration of individuals either into or out of the population. 3) **Random mating must occur, meaning individuals mate by chance**.

## How do you find the equilibrium frequency of alleles?

We solve this for q to give the equilibrium allele frequency , **q-hat: q = sqrt(u/s) (sqrt stands for square root)**. Most mutation rates are fairly small numbers (about 10^{–}^{6}), so this equation suggests that deleterious alleles will be maintained in mutation selection balance at fairly low frequencies.

## How can the Hardy-Weinberg principle of genetic equilibrium be used to determine whether this population is evolving?

Key points: When a population is in Hardy-Weinberg equilibrium for a gene, it is **not evolving**, and allele frequencies will stay the same across generations. … If the assumptions are not met for a gene, the population may evolve for that gene (the gene’s allele frequencies may change).

## What are the seven assumptions that the HW equilibrium principle depends on?

The assumptions of the Hardy-Weinberg equilibrium equations are: 1) the population is very large, 2) the population is closed, meaning that there are no individuals immigrating into or emigrating out of the population, 3) **there are no mutations occurring on the gene in question**, 4) individuals within the population are …

## What are the two equations for Hardy-Weinberg equilibrium?

The Hardy-Weinberg equation allows us to predict which ones they are. Since p = 1 – q and q is known, it is possible to calculate p as well. Knowing p and q, it is a simple matter to plug these values into the Hardy-Weinberg equation **(p² + 2pq + q² = 1)**.