Question

In rye grass, seed color is a polygenic trait (additive model). If true-breeding red and white varieties are crossed, the F1 are intermediate in color. If the F1 are self-fertilized, about 1 in 64 have white seeds. How many loci are segregating color alleles?

a. one
b. two
c. three
d. four
e. five

Answer 1

c. three

Step-by-step explanation:

How many loci are segregating color alleles: Three: (1/4) ^ 3