Answer to Question #156976 in Genetics for bri

Question

In a population of caterpillars, lime-green color with black spots is dominant (L) over lime-green color with no black spots (l). Which of the following results below would be expected from a cross of two heterozygous parents for this trait?

Answer 1

The genotypes of the heterozygous parents are Ll.

If they mate, their offspring will have the following genotypes:

P: Ll × Ll

G: L, l × L, l

F1: LL, 2Ll, ll

As a result, 75% of the offspring will have black spots (genotypes LL and 2Ll) while 25% of the offspring (genotype ll)) will lack black spots.