What does PQ mean in Hardy Weinberg formula?

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 does p2 represent in the Hardy Weinberg formula?

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.

Is P Q 1 always true?

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 probability of DD equal to 2 PQ?

Dd is equal to 2pq because there are two ways to be heterozygous in a cross as illustrated in the Punnet square below. p represents the frequency of the dominant allele and q represents the frequency of the recessive allele.

How do you find P and Q in Hardy Weinberg?

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).



  1. The frequency of the recessive allele. …
  2. The frequency of the dominant allele. …
  3. The frequency of heterozygous individuals.
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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.

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 P and Q 1?

Because there are only two possible alleles, we can say that the frequency of p and q together represent 100% of the alleles in the population (p+q=1).

Why is Model 1 labeled selective mating?

Why is Model 1 labeled “Selective Mating”?-It is labeled selective mating because they specifically selected beatles who were homozygousrecessive and heterozygous and mated them with each other.

What is the probability of DD?

So for parents who both have genotype Dd, there is a 25% probability that their offspring is DD, a 25% probability that the offspring is dd, and a 50% probability that the offspring is Dd.

What is the phenotype frequency?

Relative phenotype frequency is the number of individuals in a population that have a specific observable trait or phenotype. … Relative genotype frequency and relative allele frequency are the most important measures of genetic variation.

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