What must be true for a population to be in Hardy-Weinberg equilibrium? There must be random mating in the population; there must be an infinite population size; and there must be no evolution occurring (no natural selection, no genetic drift, no migration and no mutation).

## What must be true of a population that is in Hardy-Weinberg equilibrium?

When a population is in Hardy-Weinberg equilibrium for a gene, **it is not evolving**, and allele frequencies will stay the same across generations. There are five basic Hardy-Weinberg assumptions: no mutation, random mating, no gene flow, infinite population size, and no selection.

## What criteria must a population meet in order to stay in Hardy-Weinberg equilibrium quizlet?

They are said to be in Hardy-Weinberg equilibrium: – **Very large population: No genetic drift can occur**. -No immigration or immigration: No gene flow can occur. -No mutations: No new alleles can be added to the gene pool.

## What do PQ p2 2pq and q2 represent?

p2 +2pq + q2 = 1 Where p2 represents the frequency of the homozygous dominant genotype, q2 represents **the frequency of the recessive genotype** and 2pq is the frequency of the heterozygous genotype.

## Which does not affect 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. … Therefore mutation, gene flow, small population, nonrandom mating, and natural selection will disrupt the equilibrium.

## Why is there a 2 in 2pq?

The term p2 represents **the frequency of dominant homozygotes (AA)** and the term q2 represents the frequency of recessive homozygotes (aa). p represents the allele frequency of allele A, and q represents the allele frequency of the allele a.

## How do you know if something is in Hardy-Weinberg equilibrium?

To know if a population is in Hardy-Weinberg Equilibrium scientists **have to observe at least two generations**. If the allele frequencies are the same for both generations then the population is in Hardy-Weinberg Equilibrium.

## What is meant by 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**. … For instance, mutations disrupt the equilibrium of allele frequencies by introducing new alleles into a population.

## What 5 conditions are required for a population to stay in 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.

## When a population is said to be in equilibrium it means quizlet?

-A population in Hardy-Weinburg equilibrium **is not changing genetically, not evolving**. -Comparing gene frequencies in two succeeding generations can show if evolution is occurring(it is occurring if the frequencies change) and can determine which direction and rate of evolution.

## When a population is not in Hardy-Weinberg equilibrium What does that demonstrate quizlet?

What can be concluded if real genetic data do not match the frequencies predicted by the equation? The population is NOT in Hardy-Weinberg equilibrium, which means **one or more of the conditions are not met**, which means the population is evolving.