If there are 250 hba alleles in a population of 500 people, what is the frequency of the hba allele in that group?

Answer;

25%

Explanation;

Each person in the population should have 2 alleles since a chromosome is coupled. So, the total allele in 500 people should be: 500*2 allele = 1000 allele.

Therefore; frequency of the allele should be:

250 allele / 1000 allele = 0.25 = 25%

An allele frequency is the proportion of one allele relative to all alleles at the locus in the population. It is important to note that;

-The frequencies of all alleles will always add up to 1 (or 100% of the alleles)

-The total number of alleles (not number of forms of the gene) for a given population at a given locus will be equal to two times the population size

•Except for traits on the Y chromosome, where population size and allele count would be the same

-If there are only two alleles at the locus, there are only two allele frequencies and one of the frequencies will be equal to 1 - the frequency of the other allele.

In this question, there are 500 people in the population and the amount of hba allele is 250. Each person should have 2 alleles since a chromosome is coupled. So, the total allele in 500 people should be: 500*2 allele = 1000 allele.

Then frequency of the allele should be:250 allele / 1000 allele = 0.25 = 25%