Assertion :In humans, the gamete contributed by the male determines whether the child produced will be male or female. Reason: Sex in humans in a polygenic trait depending upon a cumulative effect of some genes on X chromosome and some on Y chromosome.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Assertion is correct but Reason is incorrect.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Both Assertion and Reason are incorrect.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C Assertion is correct but Reason is incorrect.
Human females have XX chromosomes and males have XY chromosomes. The sperm may contain either X or Y chromosome. The sperm is the factor in deciding the sex of the child. If the sperm carries an X chromosome, it will fuse with the egg’s X chromosome to form a female. If the sperm carries a Y chromosome, it will result in a male child.
Polygenic traits are the genes which interact to have an effect on the same character. There is no such interaction between the genes on the X and Y chromosome. The presence of the chromosome decides the sex of the child.
Thus the correct answer is option C.

Suggest Corrections

Similar questions

Q. Assertion :In humans, the gamete contributed by the male determines whether the child produced will be male or female. Reason: Sex in humans is a polygenic trait depending upon a cumulative effect of some genes on X-chromosome and some on Y - chromosome.

Q. Assertion :In humans the gamete contributed by the male determines whether the child produced will be male or female. Reason: Sex in humans is polygenic trait dependent upon the cumulative effect of some genes on X-chromosome and some on Y-chromosome.

Assertion (A) Order of the reaction can be zero or fractional.

Reason (R) We cannot determine order from balanced chemical equation.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

Assertion (A) Order and molecularity are same.

Reason (R) Order is determined experimentally and molecularity is the sum of the stoichimetric coeffcient of rate determining elementary step.

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

Join BYJU'S Learning Program