Q. No.Consider the following key events:
| I: | Chromosomes cluster at opposite spindle poles and their identity is lost as discrete elements. |
| II: | Nucleolus, Golgi complex and ER reform. |
The stage of mitosis characterized by these key events is:
| 1. | Prophase | 2. | Metaphase |
| 3. | Anaphase | 4. | Telophase |
Meiosis results in the formation of:
| 1. | Two genetically identical diploid cells |
| 2. | Two genetically non identical diploid cells |
| 3. | Four genetically identical haploid cells |
| 4. | Four genetically non identical haploid cells |
Synapsis occurs between
1. mRNA and ribosomes
2. Spindle fibers and centromere
3. Two homologous chromosomes
4. A male and a female gamete
The correct chronology of stages of Prophase I is:
| 1. | Leptotene – Zygotene – Pachytene – Diplotene – Diakinesis |
| 2. | Leptotene – Pachytene – Zygotene – Diplotene – Diakinesis |
| 3. | Leptotene – Zygotene – Pachytene – Diakinesis – Diplotene |
| 4. | Zygotene – Leptotene – Pachytene – Diakinesis – Diplotene |
Which of the following stages of Prophase I of meiosis I can last for many months or years in certain vertebrate oocytes?
| 1. | Zygotene | 2. | Pachytene |
| 3. | Diplotene | 4. | Diakinesis |
The beginning of diplotene is recognized by:
| I: | dissolution of the synaptonemal complex |
| II: | the tendency of recombined homologues of bivalents to separate |
| III: | tetrads becoming clearly visible |
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II, and III |
During anaphase I of meiosis
1. Homologous chromosomes separate
2. Non-homologous autosomes separate
3. Sister chromatids separate
4. Non-sister chromatids separate
Which stage of meiosis is shown in the diagram given below?
| 1. | Metaphase I | 2. | Metaphase II |
| 3. | Anaphase I | 4. | Anaphase II |
Consider the following statements regarding meiosis:
| I: | At metaphase I, the microtubules from the opposite poles of the spindle attach to the pair of homologous chromosomes. |
| II: | At anaphase I, the homologous chromosomes separate, while sister chromatids remain associated with each other. |
Of the two statements:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
During meiosis, the bivalent chromosomes clearly appear as tetrads first at:
| 1. | Zygotene of Prophase I | 2. | Pachytene of Prophase I |
| 3. | Metaphase I | 4. | Anaphase I |
© 2025 GoodEd Technologies Pvt. Ltd.