Question:
Which of the following is associated with Barr body?
Which of the following is associated with Barr body?
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Barr bodies are only present in females and represent inactivated X chromosomes that help equalize gene expression between the sexes.
Updated On: June 02, 2025
- Autosome
- X chromosome
- Y chromosome
- Only male body
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The Correct Option is B
Solution and Explanation
Step 1: Understand Barr body formation.
A Barr body is an inactivated X chromosome in female mammals, which occurs to balance the gene dosage between males and females.
Step 2: Analyze the options.
The Barr body is associated with the X chromosome and is found in females to prevent double expression of X-linked genes. Autosomes are non-sex chromosomes and are not involved in Barr body formation. The Y chromosome does not form a Barr body. Males do not have Barr bodies because they have only one X chromosome.
Conclusion: The correct answer is (B) X chromosome.
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