Answer:
The percent chance that the offspring will have a single comb is
%
Explanation:
Given,
The allele for single comb represented as "a" is recessive to the allele for pea comb represented as "A"
Genotype of male - Aa
Genotype of female - Aa
Gamete of Male - A, a
Gamete of female - A, a
Cross between Aa and Aa will produce
AA, Aa, Aa, aa
Thus, out of four offspring only one has "aa" genotype and hence this individual will express the recessive trait i,e aa
The percent chance that the offspring will have a single comb is

%
The possible genotypes are 50% heterozygous Tt 50% homozygous tt 0% they will have homozygous dominant genotype both genotypes have equal probability to occur because both are 50 50
The answer is called monoclonal. Hope this helps and please don't forget to thank me.