56.5 is the allele frequency for smooth seeds.
The incidence of a gene variant in a population is represented by the allele frequency. Alleles are different versions of a gene that share the same genetic locus on a chromosome.
Given,
how many plants have tough seed= 19
number of plants overall=100
Frequency of the genotype "plant with rough seed," that is= q²= 19/100=0.19
Consequently, the "rough seed" allele frequency= √0.19= 0.435
We know that the sum of the allele frequencies near the locus is equal to one thanks to the Hardy-Weinberg equation.
Thus, p + q =1
By changing the value of q in the above equation, we obtain -
p+ 0.435 = 1
p= 1-0.435
p= 0.565
P stands for the smooth seed frequency.
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