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Earn 100
The separation of two chromatids of each chromosome at early anaphase is initiated by ____. State the reason responsible for separation of the chromatids.
(a)the interaction of centromere with the chromosomal fibres
(b)the elongation of metaphasic spindle
(c)the force of repulsion between the divided point where spindle fiber attached
(d)all of these
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Important Questions on Cell Cycle and Cell Division
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Which of the following is key event of anaphase of mitotic division?
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What is true about telophase stage of mitosis?
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Which of the following shows the correct sequence of the given mitotic stages?
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Match column with column and select the correct option from the given codes.
Column I | Column II | ||
---|---|---|---|
(a) | Disintegration of nuclear membrane | (i) | Anaphase |
(b) | Appearance of nucleolus | (ii) | Prophase |
(c) | Division of centromere | (iii) | Telophase |
(d) | Replication of | (iv) | -Phase |
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Which phase of mitosis is essentially the reverse of prophase in terms of nuclear changes?
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The given graph shows the change in content during various phases ( to ) in a typical mitotic cell cycle. Identify the phases and select the correct option.
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A cell's division time is minute. In minutes, a culture tube (culture medium) is filled with cells. When the tube will be fully filled?
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Cytokinesis in an animal cell takes place by ________ method in ________ direction; while in a plant cell it occurs by _________ method in _________ direction.