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 are the events of zygotene of prophase -I of meiosis?

  • Ans 1: First essential phenomenon of meiosis i.e, pairing of homologous chromosomes called synapsis starts. Each paired but not fused,complex structure is called bivalent or tetrad.
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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 are the events of zygotene of prophase -I of meiosis?

  • Ans 1: First essential phenomenon of meiosis i.e, pairing of homologous chromosomes called synapsis starts. Each paired but not fused,complex structure is called bivalent or tetrad.
Submit

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

Question # 1

Cancer is uncontrolled cell division. Explain.

  • Ans 1: It is called so because genes controlling the cell division lose their control over cell division and cell divides without any control,so it is called uncontrolled cell division.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 3

Question # 1

What changes in cell take place during diplotene?

  • Ans 1: The paired chromosomes repel each other and begins to separate.Separation however,is not complete,because homologous chromosomes remain united by their point of interchange.Each bivalent has at least one such point,the chromatids other wise separated.
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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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Biology
21th Chapter

12th Class Biology Chapter 21 Short Questions

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