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Assertion : In pigeons, females are hete...

Assertion : In pigeons, females are heterogametic and males are homogametic
Reason : In pigeons, females have ZW sex chromosomes and males have ZZ sex chromosomes.

A

If both assertion and reason are true but reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

Assertion is correct but reason is incorrect

D

Both assertion and reason are incorrect

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Assertion**: The assertion states that in pigeons, females are heterogametic and males are homogametic. - **Heterogametic** means that the individual produces two different types of gametes regarding sex chromosomes. - **Homogametic** means that the individual produces only one type of gamete regarding sex chromosomes. 2. **Analyzing the Reason**: The reason given is that in pigeons, females have ZW sex chromosomes and males have ZZ sex chromosomes. - In this context, ZW indicates that females have one Z chromosome and one W chromosome, leading to the production of two types of gametes (Z and W). - ZZ indicates that males have two Z chromosomes, leading to the production of only one type of gamete (Z). 3. **Evaluating the Assertion**: Since females (ZW) can produce two types of gametes (Z and W), they are indeed heterogametic. Males (ZZ) can only produce one type of gamete (Z), making them homogametic. Therefore, the assertion is true. 4. **Evaluating the Reason**: The reason correctly describes the sex chromosome composition in pigeons. Females having ZW chromosomes and males having ZZ chromosomes supports the assertion that females are heterogametic and males are homogametic. Thus, the reason is also true. 5. **Conclusion**: Both the assertion and the reason are true, and the reason correctly explains the assertion. **Final Answer**: Both the assertion and reason are true, and the reason is the correct explanation of the assertion. ---
**Step-by-Step Solution:** 1. **Understanding the Assertion**: The assertion states that in pigeons, females are heterogametic and males are homogametic. - **Heterogametic** means that the individual produces two different types of gametes regarding sex chromosomes. - **Homogametic** means that the individual produces only one type of gamete regarding sex chromosomes. 2. **Analyzing the Reason**: The reason given is that in pigeons, females have ZW sex chromosomes and males have ZZ sex chromosomes. - In this context, ZW indicates that females have one Z chromosome and one W chromosome, leading to the production of two types of gametes (Z and W). ...
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