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
%
Parents can pass on chromosomes to their children that are different than their own when the new gene combinations are created by crossing over. The exchange of genetic material between homologous chromosomes is known as crossing over which occurs in meiosis. When homologous chromosomes pair up and exchange different segments of the genetic material. As the result, a new combination of genes will be formed. If there was not crossing over, all genes on a chromosome would be inherited together.crossing over of homologous chromosomes during meiosis
Hope this helps.....
A.<span>Can be difficult to increase wild populations </span>
