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Diplotene phase of meiosis is also chara...

Diplotene phase of meiosis is also charactertised by
a. Desynapsis
b.Complete terminalisation of chiasmata
c.Dictyotene stage
d. Complete disappearance of nuclear membrane and nucleoli
e. Complete development of astral rays and aster
f. Longest phase of prophase-I

A

a, b, c, and e

B

b, d, e, and f

C

a, c, and f

D

b, d, and f

Text Solution

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The correct Answer is:
To solve the question regarding the characteristics of the Diplotene phase of meiosis, we will analyze each option provided and determine which ones are correct. ### Step-by-Step Solution: 1. **Understanding Diplotene Phase**: - The Diplotene phase is a part of Prophase I of meiosis. It is characterized by the dissolution of the synaptonemal complex, which connects homologous chromosomes. 2. **Analyzing Each Option**: - **Option a: Desynapsis** - This refers to the dissolution of the synaptonemal complex. This is indeed a characteristic of the Diplotene phase. **(Correct)** - **Option b: Complete terminalisation of chiasmata** - In the Diplotene phase, terminalization of chiasmata begins but is not complete. This process is completed in the next phase, Diakinesis. **(Incorrect)** - **Option c: Dictyotene stage** - The Dictyotene stage is a prolonged phase of the Diplotene stage, where the chromosomes may remain in this stage for an extended period. This is also a characteristic of the Diplotene phase. **(Correct)** - **Option d: Complete disappearance of nuclear membrane and nucleoli** - The complete disappearance of the nuclear membrane and nucleoli does not occur in the Diplotene phase; it happens later in meiosis. **(Incorrect)** - **Option e: Complete development of astral rays and aster** - The development of astral rays and asters is not a characteristic of the Diplotene phase. This occurs in later stages of cell division. **(Incorrect)** - **Option f: Longest phase of Prophase I** - The Diplotene phase is indeed the longest phase of Prophase I in meiosis. **(Correct)** 3. **Conclusion**: - The correct characteristics of the Diplotene phase are: - a. Desynapsis (Correct) - c. Dictyotene stage (Correct) - f. Longest phase of Prophase I (Correct) Thus, the correct options are A, C, and F. ### Final Answer: The correct answer is option 3 (A, C, F). ---
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AAKASH INSTITUTE ENGLISH-CELL CYCLE AND CELL DIVISION -Section - B
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  2. Cytokinesis in a plant cell is achieved by the formation of cell plat...

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  3. Name two viral STDs

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  4. All the essential stages that take place during meiosis, except

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  5. In the meiotic cell division four daughter cells are produced by two s...

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  6. If the egg of an organism has 10 Pg of DNA in its nucleus, how much DN...

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  7. To produce 102 pollen grains, how many meiotic divisions are required ...

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  8. Find out the wrong statement .

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  9. What will be the content of DNA in a somatic cell at G(2) if its mei...

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  10. All chromosomes of a cell are directed towards one side and are attach...

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  11. Diplotene phase of meiosis is also charactertised by a. Desynapsis ...

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  12. Recombination nodules which mediate for chromosome recombination occur...

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  13. In oocytes of some vertebrates, can last for months or years.

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  14. When synapsis is complete all along the chromosomes, the cell is said...

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  15. The beginning of which stage of prophase is marked by complete termin...

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  16. What will be the amount of DNA in a pollen grain if its mother cell h...

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  17. The paradox of meiosis is

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  18. Cell organelles replicate in/during

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  19. Best stage to observe shape, size and number of chromosomes is

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  20. Temporaily suspended stage of diplotene during meiosis -I is

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