# In Hardy-Weinberg equation, the frequency of heterozygous individuals is represented by Option 1) p2 Option 2) 2pq Option 3) pq Option 4) q2

As we discussed in

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

Option 1)

p2

This option is incorrect.

Option 2)

2pq

This option is correct.

Option 3)

pq

This option is incorrect.

Option 4)

q2

This option is incorrect.

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