## How do you calculate the Hardy-Weinberg equation?

# How do you calculate the Hardy-Weinberg equation?

## How do you calculate the Hardy-Weinberg equation?

The Hardy-Weinberg equation used to determine genotype frequencies is: p2 + 2pq + q2 = 1. Where ‘p2’ represents the frequency of the homozygous dominant genotype (AA), ‘2pq’ the frequency of the heterozygous genotype (Aa) and ‘q2’ the frequency of the homozygous recessive genotype (aa).

**How do you find P and Q in Hardy Weinberg?**

In a Hardy Weinberg question, if they give you the # of Homozygous dominant, # of heterozygous and the # of homozygous recessive. You can calculate the p and q by using the total number of alleles of p or q divided by the total number of alleles in the population or finding q^2 to find q.

### How do you calculate Hardy Weinberg allele frequency?

To calculate the allelic frequencies we simply divide the number of S or F alleles by the total number of alleles: 94/128 = 0.734 = p = frequency of the S allele, and 34/128 = 0.266 = q = frequency of the F allele.

**How do you calculate allele frequency?**

An allele frequency is calculated by dividing the number of times the allele of interest is observed in a population by the total number of copies of all the alleles at that particular genetic locus in the population. Allele frequencies can be represented as a decimal, a percentage, or a fraction.

#### 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.

**What is P and Q in genetics?**

where p is the frequency of the “A” allele and q is the frequency of the “a” allele in the population. In population genetics studies, the Hardy-Weinberg equation can be used to measure whether the observed genotype frequencies in a population differ from the frequencies predicted by the equation.

## Is the Hardy-Weinberg model 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.

**What is major allele frequency?**

In addition, the major allele, by definition, could have a frequency of 50.5%, in which case, although it is more frequent, it is only more frequent by 0.5%.

### How do you calculate 2pq?

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).

**What do p and q represent?**

The p represents the frequency of the dominant allele. The q represents the frequency of the recessive allele.