MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Molecular Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The one which is able to repress the production of the Xist transcript is the active X chromosome. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
The functional product of the Xist gene is ___________ |
| A. | mRNA |
| B. | rRNA |
| C. | RNA devoid of ORF |
| D. | Protein |
| Answer» D. Protein | |
| 3. |
All genes on the inactivated X chromosome are transcriptionally silent. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
The X-chromosome once inactivated remains inactive throughout the life in all the cells of the body. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
ALL_GENES_ON_THE_INACTIVATED_X_CHROMOSOME_ARE_TRANSCRIPTIONALLY_SILENT.?$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
The one which is able to repress the production of Xist transcript is the active X chromosome.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
The functional product of the Xist gene is ___________$ |
| A. | mRNA |
| B. | rRNA |
| C. | RNA devoid of ORF |
| D. | Protein |
| Answer» D. Protein | |
| 8. |
In which stage of the cell cycle the Barr body can be identified? |
| A. | Interphase |
| B. | Prophase |
| C. | Metaphase |
| D. | Anaphase |
| Answer» B. Prophase | |
| 9. |
The X-chromosome once inactivated remains inactive throughout the life in all the cells of the body? |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
What changes occur in the chromosome to make it inactive? |
| A. | Methylation |
| B. | Glycosylation |
| C. | Acetylation |
| D. | Phosphorylation |
| Answer» B. Glycosylation | |
| 11. |
Barr body is the ___________ |
| A. | Active X chromosome |
| B. | Inactive X chromosome |
| C. | Active Y chromosome |
| D. | Inactive Y chromosome |
| Answer» C. Active Y chromosome | |
| 12. |
The best genetic mosaicism is observed in which of the following? |
| A. | Tobacco |
| B. | Fruitfly |
| C. | Dragonfly |
| D. | Cat |
| Answer» E. | |
| 13. |
Female mammals are called genetic mosaics. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 14. |
The maternal X-chromosome is inactivated during Dosage compensation. |
| A. | True |
| B. | False |
| Answer» C. | |
| 15. |
The proposal for the concept of X-chromosome inactivation in female XX-chromosomes was experimentally shown in ___________ |
| A. | Drosophila |
| B. | Mice |
| C. | Human |
| D. | Monkey |
| Answer» C. Human | |
| 16. |
X-chromosome inactivation is known as ______________ |
| A. | Dominance |
| B. | Epistasis |
| C. | Dosage compensation |
| D. | Complementation |
| Answer» D. Complementation | |