A gene in mice is known to show recessive lethality but also

Last updated: 7/30/2022

A gene in mice is known to show recessive lethality but also has dominant coat colour effects, where the presence of one copy of a particular allele will result in a yellow coat colour instead of the wild type black coat phenotype. A yellow coat-coloured mouse is crossed to an inbred black coat-coloured mouse. If two yellow coat-coloured mice from this cross are crossed to each other, what fraction of the offspring will have black coats? A) 1/4 B) 1/3 C) 2/3 D) 3/4