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

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Biology - 12th Class Biology Chapter 21 Short Questions Preparation

Question # 1

What change occurs in dividing cell during zygotene?

  • Ans 1: Pairing of chromosomes takes place during the zygetene stage of the meiosis.
    Pairing may start from center to towards end or may start from one end to another end.
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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

What change occurs in dividing cell during zygotene?

  • Ans 1: Pairing of chromosomes takes place during the zygetene stage of the meiosis.
    Pairing may start from center to towards end or may start from one end to another end.
Submit

12th Class Biology Chapter 21 Short Questions Preparation - Set 2

Question # 1

What is importance of bivalent formation?

  • Ans 1: Due to bivalent formation of homologous chromosomes,the non sister chromatids exchange their segment during the crossing over resulting in new recombination.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 3

Question # 1

Give four important functions of mitosis.

  • Ans 1: Four functions of mitosis are
  • Ans 2: a) Asexual reproduction is due to mitosis
    b) Healing of wounds and regeneration is also due to mitosis
    c) It ensure equal or same number chromosomes in daughter cell
    d) It transfer characters from parents to offspring without any change
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12th Class Biology Chapter 21 Short Questions Preparation - Set 4

Question # 1

Give two disadvantages of cloning..

  • Ans 1: Disadvantages of cloning are.
  • Ans 2: 1) All members of cloning are identical to each other and no genetic variability is produced.
    2) Member of clone does not show resistance to diseases and has less survival ability.
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Biology
21th Chapter

12th Class Biology Chapter 21 Short Questions

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