The following events occur during the various phases of the cell cycle. Name the phase against each of the events.
$(a)$ Disintegration of nuclear membrane .........
$(b)$ Appearance of nucleolus
$(c)$ Division of centromere
$(d)$ Replication of $DNA$
$(a)$ Disintegration of nuclear membrane .........
$(b)$ Appearance of nucleolus
$(c)$ Division of centromere
$(d)$ Replication of $DNA$
(N/A) Prophase: The nuclear membrane and nucleolus disappear.
$(b)$ Telophase: The nuclear envelope reforms and the nucleolus reappears.
$(c)$ Anaphase: The centromere splits,and chromatids separate.
$(d)$ $S$-phase (Synthesis phase): $DNA$ replication occurs within the nucleus.
$(b)$ Telophase: The nuclear envelope reforms and the nucleolus reappears.
$(c)$ Anaphase: The centromere splits,and chromatids separate.
$(d)$ $S$-phase (Synthesis phase): $DNA$ replication occurs within the nucleus.
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Differentiate between the Prophase of Mitosis and the Prophase of Meiosis.
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View SolutionWhich of the following stages of the cell cycle is $NOT$ correctly matched with its function?
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View Solution$A$: In telophase,the two daughter nuclei formed at opposite poles contain the same number of chromosomes as the parent nucleus.
$R$: In anaphase,the centromere of each chromosome splits,allowing the sister chromatids to separate.
$R$: In anaphase,the centromere of each chromosome splits,allowing the sister chromatids to separate.
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View SolutionMitosis results in producing two cells which are similar to each other. What would be the consequence if each of the following irregularities occur during mitosis?
$(a)$ Nuclear membrane fails to disintegrate
$(b)$ Duplication of $DNA$ does not occur
$(c)$ Centromeres do not divide
$(d)$ Cytokinesis does not occur
$(a)$ Nuclear membrane fails to disintegrate
$(b)$ Duplication of $DNA$ does not occur
$(c)$ Centromeres do not divide
$(d)$ Cytokinesis does not occur
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View Solution$(1)$ Definition / Explanation: Mitosis
$(2)$ Definition / Explanation: Meiosis
$(2)$ Definition / Explanation: Meiosis
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