Class 12 NEET Biology Principles of Inheritance and Variation Questions Part 1

There are two possibilities to a couple for their child, that is either son or daughter. Probability of having either sex is

1

2

. The probability for each child is independent of each other. Hence, the probability of four sons to a couple is (

1

2

)n, where n is the number of children.
Probability of four sons =

1

2

×

1

2

×

1

2

×

1

2

=

1

16

Hence, the correct answer is option C.