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Zygotene of prophase-I is characterised ...

Zygotene of prophase-I is characterised by

A

chromomeres

B

synaptonemal complex

C

crossing over

D

terminalisation of chiasmata.

Text Solution

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The correct Answer is:
B
During zygotene of meiotic prophase I, chormosomes start paring and are called homologous chromosomes. A pair of homologous chromosomes lying together is called a bivalent. The complex formed by a pair of synapsed homologous chormosomes is called synaptonemal complex.
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NCERT FINGERTIPS-CELL CYCLE AND CELL DIVISION-Cell Cycle And Cell Division
  1. The term "meiosis" was given by

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  2. At which of the following stages, the chromosomes appear single, thin ...

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  3. Zygotene of prophase-I is characterised by

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  4. Crossing over in diploid organisms is responsible for

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  5. Which of the following is correct regarding the given figure?

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  6. The members of a homologous pair of chromosomes

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  7. Which of the following correctly shows a pair of homologous chromosome...

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  8. Which of the following is correct about bivalent? (i) Bivalents are...

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  9. The process of crossing over is assisted by which of the following enz...

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  10. To build up food reserves in the cytoplasm, chromosomes become unfolde...

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  11. At which stage, the homologous chromosomes separate due to repulsion, ...

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  12. Diplotene stage of prophase-I is characterised by

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  13. (i) Thin thread like chromosomes with a beaded appearance (ii) Appea...

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  14. (i) Thin thread like chromosomes with a beaded appearance (ii) Appea...

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  15. Mathc the column I with column II and select the option from given cod...

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  16. Identify the given figures showing meiotic phases and select the corre...

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  17. The figure given below shows a cell undergoing meiosis. Which of ...

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  18. Disjunction refers to

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  19. Lampbrush chromosomes are seen in which typical stage?

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  20. Mathc column I with column II and select the correct option from the g...

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