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The stage during which separation of the paired homologous chromosomes begins is

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Important Questions on Cell Cycle and Cell Division

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Which of the following options gives the correct sequence of events during mitosis?
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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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Which of the following checkpoint is predominantly activated when the DNA has started forming replication fork?
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Match the stages of meiosis of 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) The pairing of homologous chromosomes
b. Metaphase I (ii) Terminalization of chiasmata
c. Diakinesis (iii) Crossing-over takes place
d. Zygotene (iv) Chromosomes align at the equatorial plate
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In meiosis, crossing over is initiated at _________.