How do you explain this result?
You are trying to improve growth in an economically important fish species. These fish have a gene for large size with two alleles (L,l). You cross a large female (LL) with a small male (ll) and get all large fish! The genotypes of the F1 are 100% Ll, so you assume that large size is dominant to small. You then cross a small female with a large male and get all small fish! The genotypes of this F1 are normal.
A. The gene for large size is a maternal effect gene.
B. L is not dominant to l.
C. The gene for large size is a sex-linked gene.
D. L is dominant to l.
E. The gene for large size is a maternal effect gene and L is dominant to l.
A. The gene for large size is a maternal effect gene.
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