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During meiosis I,chromosome number...

During meiosis I,chromosome number

A

is reduced to half

B

doubles up

C

remains the same

D

either a or b

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The correct Answer is:
A
Meiosis is the type of cell division by which gamete cells (eggs and sperm) are produced. Meiosis involves two successive nuclear divisions and one cytoplasmic division that produce four halploid cells. The first division (meiosis I) is the reductional division during which number of chromosomes is reducing to half. The second divison (meiosis II) separates the chromatids. it is called equational division as chromosome number remains the same as produced after meiosis I.
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NCERT FINGERTIPS ENGLISH-CELL CYCLE AND CELL DIVISION-MEIOSIS
  1. Lampbrush chromosomes are seen in which typical stage?

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  2. Match column I with column II and select the correct option from the g...

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  3. During meiosis I,chromosome number

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  4. Refer to the given stages A,B,C and D of meiosis I and select the inco...

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  5. During meiosis I in humans, one of the daughter cells receives

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  6. The number of chromosomes is reduced to half during

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  7. Four different steps that occur during meiosis are given in the follow...

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  8. Select the incorrectly matched pair.

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  9. Splitting of centromere and hence separation of chromatids occur durin...

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  10. If gametes are produced after reduction division, they are termed as

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  11. If 2n=4, then identify the figures A,B and C, as per the following cod...

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  12. What does (I) and (II) represent in the given flowchart? Parent cell o...

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  13. In above sequence of figures showing different stages of cell division...

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  14. Consider the given cell at metaphase-I stage undergoing normal meiosis...

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  15. While in mitosis, the daughter cells resemble each other and alos the ...

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  16. Refer to the the given and select the correct statement

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  17. Refer to the given figure. Identify A,B and C and select the corr...

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  18. Refer to the given figure of cell division. Which of the followin...

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  19. In which of the following ways are mitosis and meiosis similar?

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  20. At what phase of meiosis there are two cells, each with separated site...

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