In mice, Y is the dominant allele for yellow fur an y is the recessive allele for grey fur. Since Y is lethal when homozygous, the result of cross Yy × Yy will be
A. 3 yellow : 1 grey
B. 2 yellow : 1 grey
C. 1 yellow : 1 grey
D. 1 yellow : 2 grey
Answer:B
In mice, Y is the dominant allele for yellow fur an y is the recessive allele for grey fur. Since Y is lethal when homozygous, the result of cross Yy × Yy will be
A. 3 yellow : 1 grey B. 2 yellow : 1 grey C. 1 yellow : 1 grey D. 1 yellow : 2 grey