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Each chromosome start to moves away from...

Each chromosome start to moves away from equatorial plate in telophase.

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Formation of equatorial plate.

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Number of chromosome groups at each equatorial plate of metaphase I of a plant having 2n = 60 chromosomes, will be

The events shown below occur during different phases - A. Centromere splits, chromatids separate and move to opposite poles, chromatids are now called chromosome B. Chromosomes cluster at opposite poles, decondensation of chromosome, reappearance of NM, GB and ER. C. Chromosomal replication D. Kinetochores attach to spindle fibres and chromosome are arranged at equatorial plate E. Condensation of chromosomal materials Which or the following correctly identifies each of the phases described-

Each chromosome composed of one chromatid in:-

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A : Each chromosome of bivalent attaches with two spindles in metaphase. Reason : in metaphase bivalents migrate towards metaphasic plate

Assertion : The acrocentric chromosome has centromere at the terminal position. Reason : The metacentric chromosome has centromere slightly away from the middle of the chromosome.

ALLEN-CELL CYCLE AND CELL DIVISION-EXERCISE
  1. Following are some events of mitotic cell division, select the correct...

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  2. Small disc shaped structures at the surface of centromeres are called ...

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  3. Each chromosome start to moves away from equatorial plate in telophase...

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  4. M-phase is the largest phase of cell cycle because karyokinesis occur ...

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  5. In telophase stage chromosomes decondense and lose their individuality...

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  6. The homologous chromosomes separate, while sister chromatids remain as...

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  7. Pairing of homologous chromosomes occurs in -

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  8. Complex structure formed during synapsis is called

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  9. Enzyme required for crossing over-

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  10. Dissolution of synaptonemal complex occurs during

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  11. Chiasmata or X-shaped structures become visible during

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  12. terminalisation of chiasmata occurs during

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  13. Which phase of prophase-I represents the transition to metaphase I ?

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  14. Crossing over is the exchange of genetic material between chromatids ...

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

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  16. During stage nuclear membrane and nucleolus reappear, cytokinesis foll...

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  17. Bivalent chromosomes clearly appears as tetrad in

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  18. A short phase may intervene between Meiosis I and Meiosis II. It is ca...

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  19. Meiosis ensures the life cycle of sexually reproduction organisms.

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  20. During interphase the chromosomes become gradually visible under the l...

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