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

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.
Submit

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

Question # 1

What is importance of kinetochore in the allignment of chromosomes during mitosis?

  • Ans 1: Spindle fibers attaches at kinetochore of chromosomes and they help to align chromosomes at the center of cell to from equatorial plate or metaphase plate.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 3

Question # 1

Give affect of XYY Klinefelter syndrome.

  • Ans 1: The affected persons are phenotypically male but have frequently enlarged breast,tendency to tallness,Obesity,small testes with no sperms at ejaculation and under development of secondary sex characters.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 4

Question # 1

Give affect of XYY Klinefelter syndrome.

  • Ans 1: The affected persons are phenotypically male but have frequently enlarged breast,tendency to tallness,Obesity,small testes with no sperms at ejaculation and under development of secondary sex characters.
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21th Chapter

12th Class Biology Chapter 21 Short Questions

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