Question

Mr. 'X' is dihybrid for $A$ and $B$ . What proportion of his sperms will be :

Answer 1

Mr. 'X' is dihybrid for A and B which means that Mr X has the genotype of AaBb. During the formation if gametes, the alleles and their respective chromosomes will get randomly segregated to give four possible combinations. So the sperm can either be AB, Ab, aB or ab. Thus the proportion of his sperms, i.e, AB:Ab:aB:ab will be 1:1:1:1.