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## What does PQ represent in the equation?

In the Hardy-Weinberg equilibrium equation, the term 2pq represents the **genotype frequency of heterozygotes in a population in equilibrium** (where p2 + 2pq + q2 = 1 ).

## What is P and Q in the Hardy Weinberg equation?

In this equation, **p² is the predicted frequency of homozygous dominant (AA) people** in a population, 2pq is the predicted frequency of heterozygous (Aa) people, and q² is the predicted frequency of homozygous recessive (aa) ones.

## What does PQ p2 q2 2pq mean?

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**.

## What does PQ mean in 2pq?

p^{2} = **percentage of homozygous dominant individuals**. q^{2} = percentage of homozygous recessive individuals. 2pq = percentage of heterozygous individuals. PROBLEM #1. You have sampled a population in which you know that the percentage of the homozygous recessive genotype (aa) is 36%.

## Is P Q 1 always true?

The frequency of the a allele (q) = the number of a alleles (60) divided by the total number of alleles (200). Notice that p and q sum to 1 -> 0.7 + 0.3 = 1. This **is always true if there are only two alleles**. A good check on your math is to calculate these independently of each other and check that they sum to 1.

## Why is the 2 in the term 2pq necessary?

Transcribed image text: In the formula for determining a population’s genotype frequencies, the pq in the term 2pq is necessary **because the population is diploid**. heterozygotes can come about in two ways. the population is doubling in number. heterozygotes have two alleles.

## What does P Q 1 represent?

The Hardy-Weinberg Law is an equation for calculating the frequencies of different alleles and genotypes in a population in genetic equilibrium and expressed by the formula p + q = 1 where **p is the frequency of the dominant allele and q** is the frequency of the recessive allele.

## What is p2 2pq?

In the equation, p2 represents the frequency of the homozygous genotype AA, q2 represents the frequency of the homozygous genotype aa, and 2pq represents the frequency of the **heterozygous genotype Aa**.

## How do you calculate P and Q?

We can calculate the values of p and q, in a representative sample of individuals from a population, by **simply counting the alleles and dividing by the total number of alleles examined**. For a given allele, homozygotes will count for twice as much as heterozygotes.

## Why is 2pq not PQ?

Note that the heterozygotes are not 2pq but pq **because in each case they are only being considered for the one allele in question**. If we scale all wii’s such that the largest = 1.0 we refer to these as the relative fitnesses of the genotypes. A worked example where p = . 4, q = .

## Why is there a 2 in 2pq but not in p2 or q2?

9. Why is there a “2” in “2pq” but not in “p2” nor “q2”? **16% of a population is unable to taste the chemical PTC**. These non- tasters are recessive for the tasting gene.

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

There are five basic Hardy-Weinberg assumptions: **no mutation, random mating, no gene flow, infinite population size, and no selection**.