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.

## Why is the Hardy-Weinberg principle important?

This relationship, known as the Hardy-Weinberg principle, is important **because we can use it to determine if a population is in equilibrium for a particular gene**. The Hardy-Weinberg principle applies to individual genes with two alleles, a dominant allele and a recessive allele.

## What is the point of the Hardy-Weinberg equation?

The Hardy-Weinberg equation is a mathematical equation that can be used **to calculate the genetic variation of a population at 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.

## Why is Hardy-Weinberg not realistic?

Explanation: All of the answer choices are assumptions made when considering Hardy-Weinberg equilibrium. Thus, **the model is not very realistic in nature**, since these conditions are rarely met. Also, no natural selection is assumed to occur.

## How do you calculate P and Q?

To find q, simply **take the square root of 0.09 to get 0.3**. Since p = 1 – 0.3, then p must equal 0.7. 2pq = 2 (0.7 x 0.3) = 0.42 = 42% of the population are heterozygotes (carriers).

…

- The frequency of the recessive allele. …
- The frequency of the dominant allele. …
- The frequency of heterozygous individuals.

## How do you know if it’s 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.