Question

An individual heterozygous for two allele (Ww and Tt) produce two million sperms. How many of the sperms will have both the recessive alleles (in millions)?

• A. 1
• B. 2
• C. 0.5
• D. 0.25

Answer 1

The correct option is C 0.5

The given heterozygous individual will produce sperms having following genotype WT, Wt, wT, wt in the ratio 1:1:1:1. Thus, out of 2 million sperms, sperms having both the recessive alleles are 0.25 X 2 million = 0.5 million sperms.

So, the correct answer is option C.