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 "

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Biology - 12th Class Biology Chapter 21 Short Questions Preparation

Question # 1

What is Klinfelter's syndrome?

  • Ans 1: The individual have an additional sex chromosome i.e,47.(44+xxy).They 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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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 is Klinfelter's syndrome?

  • Ans 1: The individual have an additional sex chromosome i.e,47.(44+xxy).They 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 2

Question # 1

Define metastasis. Or what is metastasis?

  • Ans 1: The cell composing a malignant tumor or cancer,divide more rapidly,mostly invade surrounding tissues,get into the body's circulatory system,and set up areas of proliferation away from their site of original appearance.This spread of tumor cells and establishment of secondary area of growth is called metastasis.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 3

Question # 1

Write down the events of metaphase of mitosis.

  • Ans 1: The Kinetochore fibers of spindles attach to the kinetochore region (specialized area in centromere) of chromosomes and align them at the equator of the spindle forming equatorial plate or metaphase plate.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 4

Question # 1

What events occur in anaphase-I in meiosis?

  • Ans 1: During the anaphase of meiosis -1.The spindle fibers contract and each member of homologous chromosomes moves towards each pole.In this way half chromosomes reaches to one pole and other half reaches to another pole.
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12th Class Biology Chapter 21 Short Questions

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