Biology 1st Edition by Jung Choi, Jean DeSaix, Yael Avissar, Vladimir Jurukovski, Robert Wise,Connie Rye, OpenStax

تمرين 1

In a mating between two individuals that are heterozygous for a recessive lethal allele that is expressed in utero, what genotypic ratio (homozygous dominant:heterozygous:homozygous recessive) would you expect to observe in the offspring?
A) 1:2:1
B) 3:1:1
C) 1:2:0
D) 0:2:1