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Crossing over that results in genetic re...

Crossing over that results in genetic recombination in higher organisms occurs between

A

sister chromatids of bivalent

B

non-sister chromatids of a bivalent

C

two daughter nuclei

D

two different bivalents

Text Solution

Verified by Experts

The correct Answer is:
B
The process of crossing over takes place in pachytene stage of prophase-I of meiosis-I. In this process some genes of two non-sister chromatids of a bivalent are exchanged.
The process of crossing over is depicted
Sister chromatids of one
duplicate chromosome
` (##ARH_31Y_NEET_BIO_C12_E01_029_S01.png" width="80%">
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NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-CELL CYCLE AND CELL DIVISION-EXERCISE
  1. Which one of the following precedes re-formation of the nuclear envelo...

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  2. In the somatic cell cycle.

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  3. Crossing over that results in genetic recombination in higher organism...

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  4. Mitotic spindle is mainly composed of proteins.

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  5. Best material to study meiosis is

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  6. Which of the following occurs more than one and less than five in a ch...

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  7. If a diploid cell is treated with colchicine, then it becomes

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  8. During karyokinesis, the spindle fibres get attached to condensing chr...

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  9. Crossing over in diploid organism is responsible for

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  10. A bacterium divides every 35 minutes. If a culture containing 10^(5) c...

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  11. During cell division in apical meristem nuclear membrane reappears in

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  12. How many mitotic divisions are needed for a single cell to make 128cel...

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  13. Which of the folliwng structure will not be common to mitotic cell of ...

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  14. The exchange of genetic material between chromatids of paired homologo...

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  15. Lampbrush chromosomes are visible

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  16. The point at which the polytene chromosomes appeart to be attached tog...

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  17. Meiosis is evolutionary significant because it results in

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  18. Best stage to observe shape, size and number of chromosome is

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  19. In salivary gland chromosomes/polytene chromosomes, pairing is

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  20. Meiosis II performs

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