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Select the corret matches (a) S-phase...

Select the corret matches
(a) S-phase - DNA replication
(b) Zygotene - Synapsis
(c) Diplotene - Crossing over
(d) Meiosis - Both haploid and diploid cells
`(e)`Gap 2 phase - Quiescent stage

A

A and B

B

C and D

C

C and E

D

A, C and E

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze each option and determine whether the matches are correct or incorrect based on our knowledge of cell biology. ### Step-by-Step Solution: 1. **Analyze Option (a): S-phase - DNA replication** - The S-phase (Synthesis phase) of the cell cycle is indeed where DNA replication occurs. This is a correct match. - **Conclusion:** Correct 2. **Analyze Option (b): Zygotene - Synapsis** - Zygotene is a stage in prophase I of meiosis where homologous chromosomes begin to pair and undergo synapsis. This is also a correct match. - **Conclusion:** Correct 3. **Analyze Option (c): Diplotene - Crossing over** - Diplotene is a stage in prophase I of meiosis, but crossing over occurs during the pachytene stage, not diplotene. Therefore, this match is incorrect. - **Conclusion:** Incorrect 4. **Analyze Option (d): Meiosis - Both haploid and diploid cells** - Meiosis occurs in diploid cells to produce haploid gametes. It does not occur in haploid cells. Thus, this match is incorrect. - **Conclusion:** Incorrect 5. **Analyze Option (e): Gap 2 phase - Quiescent stage** - The G2 phase is the second gap phase of the cell cycle before mitosis, while the quiescent stage (G0 phase) is a resting state where cells exit the cell cycle. Therefore, this match is incorrect. - **Conclusion:** Incorrect ### Final Summary of Matches: - (a) Correct - (b) Correct - (c) Incorrect - (d) Incorrect - (e) Incorrect ### Correct Matches: The correct matches are (a) and (b).
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