Principles of Inheritance and Variation Question 58
58. A male human is heterozygous for autosomal genes A and B and is also hemizygous for hemophilic gene $h$. What proportion of his sperms will be abh?
[2004]
(a) $\frac{1}{8}$
(b) $\frac{1}{32}$
(c) $\frac{1}{16}$
(d) $\frac{1}{4}$
Show Answer
Answer : a
Hints & Solution
(a) Chance of getting $a=\frac{1}{2}$
Chance of getting $b=\frac{1}{2}$
Chance of getting $h=\frac{1}{2}$
Chance of getting sperms with
abh $=\frac{1}{2} \times \frac{1}{2} \times \frac{1}{2}=\frac{1}{8}$
