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