Fsc part 2 online preparation for biology chapter 21 (Cell Cycle)

Online Short Questions For Chapter 7 "12th Class Biology Chapter 21 Short Questions Preparation "

Try The Short Questions For 12th Class Biology Chapter 21 Short Questions Preparation

  • Total Questions10

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Biology - 12th Class Biology Chapter 21 Short Questions Preparation

Question # 1

Define crossing over.Give its significance.

  • Ans 1: It is exchange of segments of chromosomes between non sister chromatids. Its significance is that,it provides raw material for evolution and also from new recombination of genes.
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Prepare Complete Set Wise Questions For Chapter 7 "12th Class Biology Chapter 21 Short Questions Preparation "

12th Class Biology Chapter 21 Short Questions Preparation - Set 1

Question # 1

Define crossing over.Give its significance.

  • Ans 1: It is exchange of segments of chromosomes between non sister chromatids. Its significance is that,it provides raw material for evolution and also from new recombination of genes.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 2

Question # 1

Distinguish between karyokinesis and cytokinesis.

  • Ans 1: Karyokinesis: Division of nucleus is called karyokinesis.
    Cytokinesis: Division of cytoplasm is called cytokinesis.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 3

Question # 1

How chromatin differs from chromosomes.

  • Ans 1: Chromatin is thread like network,it is formed when chromosomes becomes uncoiled.
    Chromosomes are composed of DNA and protenis. When chromatin is highly coiled it changes in to chromosomes.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 4

Question # 1

Characterize pachytene stage of meiosis.

  • Ans 1: Pairing of homologous chromosomes is completed,chromosomes become further thick and short and crossing over takes places by chiasmata formation.
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21th Chapter

12th Class Biology Chapter 21 Short Questions

Here you can prepare 12th Class Biology Chapter 21 (Cell Cycle). Click the button for 100% free full practice.

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