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.