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Meiosis-I is reductional division. Meios...

Meiosis-I is reductional division. Meiosis-II is equational division due to

A

pairing of homologous chromosomes

B

crossing over

C

separation of chromatids

D

disjunction of homologous chromosomes

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The correct Answer is:
C

Meiosis - I is called heterotypic division as the two chromatids of a chromosome become genetically different due to the crossing over. Number of chromosomes is reduced to half, hence, called reduction division. Meiosis-II is just like mitosis but occours in haploid nuclei, it is called homotypic or equational division as the chromosomes are distributed equally into daughter cells and chromosome number remains the same in daughter cells.
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NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-CELL CYCLE AND CELL DIVISION-EXERCISE
  1. If a diploid cell is treated with colchicine, then it becomes

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

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  3. Crossing over in diploid organism is responsible for

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

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

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

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

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

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  9. Lampbrush chromosomes are visible

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

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  11. Meiosis is evolutionary significant because it results in

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

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

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  14. Meiosis II performs

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  15. Balbiani rings (puffs ) are sites of

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  16. Number of chromatids per chromosome at metaphase is

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  17. In meiosis, the daughter cells differ from parent cell as well as amon...

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  18. Mitotic anaphase differs from metaphase in possessing

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  19. A bivalent of meiosis i consists of

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  20. Meiosis-I is reductional division. Meiosis-II is equational division d...

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