How is sex determined in human beings? | Class 12 Biology Chapter Principles of Inheritance and Variation, Principles of Inheritance and Variation NCERT Solutions

Question: How is sex determined in human beings?

Answer:

Human beings exhibit male heterogamy. In humans, males (XY) produce two different types of gametes, X and Y. The human female (XX) produces only one type of gametes containing X chromosomes. The sex of the baby is determined by the type of male gamete that fuses with the female gamete. If the fertilizing sperm contains X chromosome, then the baby produced will be a girl and if the fertilizing sperm contains Y chromosome, then the baby produced will be a boy. Hence, it is a matter of chance that determines the sex of a baby. There is an equal probability of the fertilizing sperm haveup an X or Y chromosome. Thus, it is the genetic make up of the sperm that determines the sex of the baby.

Sex Determined In Human Beings

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Comments

garry
2019-11-23 20:54:10

thanks to help me

Arman Rahman
2019-09-05 19:59:18

Nice

Mehak
2019-07-17 18:22:42

Nice

Mehak
2019-07-17 18:21:40

Nice

Very nice
2019-02-19 19:01:32

Sana pandey

Satyam
2019-01-19 14:55:33

How male sperm will go into female ovam

Kavya Kohli
2019-01-09 23:55:12

Nice

Pihu bisht
2018-12-12 22:02:01

Supercalifragilistic answer

Pooja
2018-12-02 20:48:35

Nice thanku

JUDHISTHIRA
2018-08-26 19:04:51

Nice

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Welcome to the NCERT Solutions for Class 12 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 1 , Question 11: How is sex determined in human beings?....

How is sex determined in human beings? | Class 12 Biology Chapter Principles of Inheritance and Variation, Principles of Inheritance and Variation NCERT Solutions

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