You Study a Complex Trait in the Offspring of a Cross

Multiple Choice

You study a complex trait in the offspring of a cross between inbred lines, and you discover that the heritability is 0. How can this result be explained?

A) There is no genetic variation among offspring.
B) The offspring are homozygous for all genes in which the parents differ.
C) The offspring are heterozygous for all genes in which the parents differ.
D) The environmental variation on the trait is huge.
E) None of the other answer options is correct.