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

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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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

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 2

Question # 1

Give causes and symptoms of Down's syndrome. Or Write symptoms of Down's syndrome.

  • Ans 1: The cause of Down's syndrome is the missing of 21stchromosomes due to non disjunction. The affected individuals have a flat,broad face,squint eyes with folds in the inner corner and protruding tongue,mental retardation and defective development of central nervous system.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 3

Question # 1

What is interphase? Write the name of its sub stages

  • Ans 1: The period of life cycle between two consecutive division is termed as the interphase,or misleadingly termed as the resting phase:\its sub stage are:
    i) G1 phase ii) S-phase iii) G2 phase
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12th Class Biology Chapter 21 Short Questions Preparation - Set 4

Question # 1

Write a brief note on turner's syndrome.

  • Ans 1: These infected individuals have one missing X chromosomes with only 45 chromosomes(44 autosomes + X).Individuals with this condition often do not survive pregnancy and are aborted.Those who survive have female appearance with short stature,webbed neck,without ovaries and complete absence of germs cells.
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12th Class Biology Chapter 21 Short Questions

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