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4.Principles of Inheritance and Variation
medium
Mr. Stevan is suffering from haemophilia and cystic fibrosis. His father is hetrozygous for cystic fibrosis. The probability of Stevan's sperm having recessive $X-$linked as well as autosomal allele is
A
$\frac{1}{4}$
B
$\frac{1}{16}$
C
$\frac{1}{2}$
D
$\frac{1}{8}$
Solution
$A ^{ h } A ^{ C } X ^{ h } Y \rightarrow$
$A ^{ C } X ^{ h } \rightarrow \frac{1}{2}$
$A ^{ C } Y \rightarrow \frac{1}{2}$
Standard 12
Biology
