Question

The three pairs of traits of an organism are determined by the three pairs of genes Aa, Bb, and Dd. A is dominant to a, B is dominant to b, and D is dominant to d. When the three-gene heterozygote is crossed with the three recessive homozygous, individuals with the following phenotypes are obtained:
ABD     72
aBD     130
abD      495
AbD       3
abd        68
Abd      134
ABd     494
aBd        4
Question: (1) What is the order of the three genes on the chromosome? ⑵What is the double exchange value? ⑶ Draw a linkage genetic map. ⑷ Find the coincidence coefficient.​

Answer 1

Dont do like that in front of my back

Plz open the window and let the atmosphere come in