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

A variant form of a gene is called an allele. They are different characters located on the same gene or loci of a chromosome.

They contribute to the phenotypic characteristics of an organism and can be either recessive or dominant.Gene variation in the community or the population is called allele frequency.Allele frequency can be calculated by dividing the number of times the allele of interest is observed in the sample by the total number of copies of that allele.

Given,

Total number of population = 500Hba allele present in the population = 250Every person has two alleles for a character hence, the number of alleles present in the total population = 500 × 2 = 1000

       = 0.25

       = 25 %

Therefore the frequency of Hba allele in a population of 500 is 25 %.

To learn more about allele frequency refer to the link:

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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%

C- a hypothesis or d- an observation