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

  • Available Sets4

Biology - 12th Class Biology Chapter 21 Short Questions Preparation

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.
Submit

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 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.
Submit

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.
Submit

12th Class Biology Chapter 21 Short Questions Preparation - Set 3

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.
Submit

12th Class Biology Chapter 21 Short Questions Preparation - Set 4

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.
Submit

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.

Is this page helpful?

Share your comments & questions here

Guest
  • No comments yet. Be the first to comment!