MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of these is true regarding crossing over? |
| A. | Exchange occurs between non-homologous chromosomes |
| B. | It involves recombination nodules |
| C. | It is not mediated by enzymes |
| D. | It occurs during zygotene |
| Answer» C. It is not mediated by enzymes | |
| 2. |
Crossing over takes place during _____ |
| A. | pachytene |
| B. | zygotene |
| C. | leptotene |
| D. | diplotene |
| Answer» B. zygotene | |
| 3. |
During which stage do the chromatids of a bivalent become distinct? |
| A. | Leptotene |
| B. | Zygotene |
| C. | Pachytene |
| D. | Diplotene |
| Answer» D. Diplotene | |
| 4. |
Which of these following statements is false about synapsis? |
| A. | Pairs of homologous chromosomes are formed |
| B. | It occurs during zygotene |
| C. | It results in tetravalent formation |
| D. | It is accompanied by synaptonemal complex formation |
| Answer» D. It is accompanied by synaptonemal complex formation | |
| 5. |
During which stage of prophase I does synapsis occur? |
| A. | Pachytene |
| B. | Leptotene |
| C. | Diplotene |
| D. | Zygotene |
| Answer» E. | |
| 6. |
The duration of zygotene is shorter than that of pachytene. True or false? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
What is the chromosomal association process in zygotene called? |
| A. | Zygote |
| B. | Tetrad |
| C. | Synapsis |
| D. | Chiasmata |
| Answer» D. Chiasmata | |
| 8. |
Compaction of chromosomes occurs during ______ |
| A. | zygotene |
| B. | pachytene |
| C. | diplotene |
| D. | leptotene |
| Answer» E. | |
| 9. |
Arrange the phases of prophase I in order. |
| A. | Leptotene → Zygotene → Pachytene → Diplotene |
| B. | Zygotene → Leptotene → Pachytene → Diplotene |
| C. | Leptotene → Pachytene → Zygotene → Diplotene |
| D. | Zygotene → Leptotene → Diplotene → Pachytene |
| Answer» B. Zygotene → Leptotene → Pachytene → Diplotene | |
| 10. |
How many cells are formed at the end of meiosis I? |
| A. | 2 haploid cells |
| B. | 4 diploid cells |
| C. | 2 diploid cells |
| D. | 4 haploid cells |
| Answer» D. 4 haploid cells | |
| 11. |
Which of these undergo recombination? |
| A. | Homologous chromosomes |
| B. | Non-homologous chromosomes |
| C. | Non-sister chromatids |
| D. | Sister chromatids |
| Answer» C. Non-sister chromatids | |
| 12. |
Meiosis involves one cycle of ______ |
| A. | DNA replication |
| B. | cytokinesis |
| C. | karyokinesis |
| D. | separation of chromosomes |
| Answer» B. cytokinesis | |
| 13. |
Which of these processes involve meiosis? |
| A. | Atherogenesis |
| B. | Organogenesis |
| C. | Gametogenesis |
| D. | Embryogenesis |
| Answer» D. Embryogenesis | |
| 14. |
Which of these processes ensure the haploid phase of life cycle? |
| A. | Fission |
| B. | Mitosis |
| C. | Meiosis |
| D. | Fertilization |
| Answer» D. Fertilization | |
| 15. |
Which of these statements is not true about fertilization? |
| A. | The gametes are haploid |
| B. | Gametes develop from diploid cells |
| C. | It involves the fusion of two gametes |
| D. | Gametes have an incomplete set of chromosomes |
| Answer» E. | |