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In meiosis crossing over is initiated at:

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Important Questions on Cell Cycle and Cell Division

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Alpha Question Bank for Medical: Biology>Chapter 10 - Cell Cycle and Cell Division>Exercise-3>Q 35
Which of the following is not a characteristic feature during mitosis in somatic cells?
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Alpha Question Bank for Medical: Biology>Chapter 10 - Cell Cycle and Cell Division>Exercise-3>Q 36
Spindle fibres are attached to:
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Alpha Question Bank for Medical: Biology>Chapter 10 - Cell Cycle and Cell Division>Exercise-3>Q 37
A cell at the telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at the telophase stage. There is no formation of the cell plate and thus the cell is containing more chromosomes as compared to other dividing cells. This would result in:
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Alpha Question Bank for Medical: Biology>Chapter 10 - Cell Cycle and Cell Division>Exercise-3>Q 38
During cell growth, DNA synthesis takes place in
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Alpha Question Bank for Medical: Biology>Chapter 10 - Cell Cycle and Cell Division>Exercise-3>Q 39
When the cell has stalled DNA replication fork, which checkpoint should be predominantly activated?
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Alpha Question Bank for Medical: Biology>Chapter 10 - Cell Cycle and Cell Division>Exercise-3>Q 40

Match the stages of meiosis in Column-I to their characteristic features in Column-II and select the correct option using the codes given below:

 Column-I   Column-II
a. Pachytene (i) Pairing of homologous chromosomes
b. Metaphase I (ii) Terminalisation of chiasmata
c. Diakinesis (iii) Crossing-over takes place
d. Zygotene (iv) Chromosomes align at equatorial plate

  

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Alpha Question Bank for Medical: Biology>Chapter 10 - Cell Cycle and Cell Division>Exercise-3>Q 41
Anaphase promoting complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is expected to occur?
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Alpha Question Bank for Medical: Biology>Chapter 10 - Cell Cycle and Cell Division>Exercise-3>Q 42
Which of the following options gives the correct sequences of events during mitosis