123, ABO blood type in humans is determined by
three alleles of a single
gene: P. and i. The
p
and " alleles are codominant, and both alleles are
completely dominant to the / allele.
Shown in the table are the approximate genotype
frequencies of ABO blood types for a large
human population.
Phenotype
Genotype
Frequency
Type A
Por Mi
041
Type B
PP产 or ME
0.10
Type AB
Ap
0.04
Type O
"
045
The Hardy-Weinberg principle can be applied
to a genetic locus with three alleles by using the
following equations.
p²+q²+P+2pq+2pr + 2gr=1
p+g+r=1
Assuming that the population is in Hardy-
Weinberg equilibrium with respect to blood type.
what
is the frequency of the i allele? Give your
answer to two decimal places.