MCAT Question of the Day 79 – Biology

In one strain of mouse, homozygotes for an allele of a gene develop heart defects, while in another strain of mouse, homozygotes with the same allele develop normally. Heterozygotes develop normally in both strains. What is the most likely explanation for the difference between the two strains?

By | 2015-09-28T04:30:00+00:00 October 13th, 2015|Comments Off on MCAT Question of the Day 79 – Biology