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Give answer! In a population of 1000 individuals 360 belong to genotype AA, 480 to Aa andthe remaining 160 to aa. Based on this date, the frequency of allele A in the populationis:

In a population of 1000 individuals 360 belong to genotype AA, 480 to Aa and the remaining 160 to aa. Based on this date, the frequency of allele A in the population is:

  • Option 1)

    0.4

  • Option 2)

    0.5

  • Option 3)

    0.6

  • Option 4)

    0.7

 
Answers (1)
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The Hardy-Weinberg formulas -

This formula allows detecting  frequencies that change from generation thus allowing a simplified method of determining that evolution is occurring.

- wherein

In a population at equilibrium for a locus of two alleles D and d having frequencies p and q respectively, the genotype frequencies are: 

DD=p2,

Dd= 2 pq,

dd= q2 

and p+q =1

p2+2 pq +q= 1

 

According to Hardy - Weinberg principle 

In a population at equilibrium for a locus of two alleles D and d having frequencies p and q respectively, the genotype frequencies are: 

DD=p2,

Dd= 2 pq,

dd= q2 

and p+q =1

p2+2 pq +q2 = 1

so,

p2= 36 out of 100 individual 

q2= 16 out of 100

q= 0.161/2= 0.4


Option 1)

0.4

This is incorrect option

Option 2)

0.5

This is incorrect option

Option 3)

0.6

This is correct option

Option 4)

0.7

This is incorrect option

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