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

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 3

Question # 1

What are three sets of microtubules which originate from each pair of centriole during mitosis?

  • Ans 1: Three sets microtubules originate from centrioles are asteral microtubules radiate outward and from aster while other two sets of microtubules compose the spindle i.e the kinetochore microtubules and polar microtubules.
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12th Class Biology Chapter 21 Short Questions Preparation - Set 4

Question # 1

What change occurs in dividing cell during zygotene?

  • Ans 1: Pairing of chromosomes takes place during the zygetene stage of the meiosis.
    Pairing may start from center to towards end or may start from one end to another end.
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Biology
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.

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