Sex Determination

Author:NCERT
12th CBSE
IMPORTANT

Important Questions on Sex Determination

HARD
IMPORTANT
NCERT Exemplar Biology - Class 12>Principle of Inheritance and Variation>Sex Determination> Q 1

Describe who determines the sex of an unborn child in humans? Mention whether the temperature has a role in sex determination.

HARD
IMPORTANT
NCERT Exemplar Biology - Class 12>Principle of Inheritance and Variation>Sex Determination> Q 2

In humans, males are heterogametic and females are homogametic. Explain. Are there any examples where males are homogametic and females heterogametic?

HARD
IMPORTANT
NCERT Exemplar Biology - Class 12>Principle of Inheritance and Variation>Sex Determination> Q 3

In our society, a woman is often blamed for not bearing a male child. Do you think it is right? Justify.

HARD
IMPORTANT
NCERT Exemplar Biology - Class 12>Principle of Inheritance and Variation>Sex Determination> Q 4

In a certain taxon of insects, some have 17 chromosomes, and the others have 18 chromosomes. The 17 and 18 chromosome-bearing organisms are

MEDIUM
IMPORTANT
NCERT Exemplar Biology - Class 12>Principle of Inheritance and Variation>Sex Determination> Q 5

ZZ / ZW type of sex determination is seen in: