3. What is the mathematical
expression of the genetic
equilibrium for genes with two
alleles? Is this statistical
distribution the same as the
statistical distribution of the
respective phenotypes?

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Considering p the frequency one of
the alleles q the frequency of
other allele of a gene in a
population, this population individuals
produce gametes with the first
for each q gamete the
second allele. Therefore probabilities
of formation of genotype
for the first is p 2, of
genotype for the second is q2
and of heterozygous genotype is
p.q .p, i.e., 2p.q.

Since the of those probabilities
necessarily 1, the resulting
mathematical is:

p2+ 2p.q +q2= .

In general the number genotypical
forms is not to the number of
forms since there are
and other interactions
between that affect the
manifestation phenotype.