This is Chintu's family. Chintu can be seen here with his father, mother and sister. Look at the picture carefully and answer the questions. Name the sex chromosomes present in Chintu's mother and father respectively. Explain why they are so called.

The sex chromosomes which are present in Chintu's mother and father are XX and XY respectively because Chintu's mother being a female has two X chromosomes in their cells, while father being a male has both X and Y chromosomes. Chintu's father is heterogametic while the mother is homogametic.

This is Chintu's family. Chintu can be seen here with his father, mother and sister. Look at the picture carefully and answer the questions. If Chintu's father produced sperms containing only the X chromosome, how many brothers would he have?

From the picture, we can conclude that Chintu has one sister. If his father produced sperms containing only the X chromosome, Chintu would not have any brother because the birth of a boy will only take place when a sperm with the Y chromosome fertilizes the egg, as the egg contains two similar types of chromosomes.

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Study Mate Science Class 8>Chapter 10 - Reaching the Age of Adolescence>NUT Cracker

Subject Experts Solutions for Chapter: Reaching the Age of Adolescence, Exercise 1: NUT Cracker

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Subject Experts Science Solutions for Exercise - Subject Experts Solutions for Chapter: Reaching the Age of Adolescence, Exercise 1: NUT Cracker

Attempt the practice questions on Chapter 10: Reaching the Age of Adolescence, Exercise 1: NUT Cracker with hints and solutions to strengthen your understanding. Study Mate Science Class 8 solutions are prepared by Experienced Embibe Experts.