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HomeDosage Compensation Quiz

Dosage Compensation Quiz

Zoologyonline August 05, 2025

Dosage Compensation Quiz

Dosage Compensation Quiz

1. What is the main purpose of dosage compensation?

To double gene expression in males To equalize X-linked gene expression between sexes To suppress autosomal genes

2. Which RNA is responsible for X-chromosome inactivation in mammals?

TSIX XIST roX

3. In Drosophila, dosage compensation is achieved by:

Inactivating one X in females Hyperactivating the X chromosome in males Deactivating Y chromosome

4. What is a Barr body?

An active autosome A transcriptional RNA molecule An inactivated X chromosome seen in female cells

5. In Caenorhabditis elegans, dosage compensation occurs by:

Inactivation of one X Hyperactivation of male X Downregulation of both X chromosomes in hermaphrodites

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