Question

Given: There is a two locus two allele system for a particular species of African antelope. One locus controls horn length and the two alleles are H and h. (HH) gives long horns, (Hh) gives short horns, and (hh) gives no horns. Only males can have horns. The second locus controls color pattern and has two alleles D and d. (DD) gives a dark color pattern to the face, (Dd) gives a dark color pattern to the face, and (dd) gives a light color pattern to the face. Assuming these genes are linked with a recombination frequency of 0.25 (r = 0.25 = 1/4) what will the frequency of the short horned light faced offspring be in a cross between parents of the genotypes HD / / hd (male) X Hd / / hd (female)?

(a) 0.125 or 1/8 (b) 0.2 or 1/5 (c) 0.25 or 1/4 (d) 0.4 or 2/5 (e) 0.5 or 1/2

please provide a step by step explanation

Answer 1