Answer:
0.08
Step-by-step explanation:
According to Hardy-Weinberg equilibrium, in absence of an evolutionary force allele frequencies in a population remain constant. In case of polyploid organisms, the formula for Hardy-Weinberg equilibrium is :
(p+q)^c = 1 where,
p = frequency of dominant allele
q = frequency of recessive allele
c = ploidy number
Here, the ploidy number is 4 since there are four chromosomes at a locus instead of the usual two.
f(C1)(C1) = 0.28
f(C2)(C2) = 0.72
Black rabbits = C1C1C1C1
Frequency of black rabbits= f(C1)(C1)*f(C1)(C1)
= 0.28 * 0.28
= 0.0784
= 0.08