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  • The following events occur during the various phases of the cell cycle Name the phase against each of the events

The following events occur during the various phases of the cell cycle, Name the phase against each of the events.

(a) Disintegration of the nuclear membrane
(b) Appearance of nucleolus
(c) Division of centromere
(d) Replication of DNA

Answers (1)

(a) Prophase: The nuclear membrane disappears exposing the chromosomes for the cell to divide with the genetic material. ?

(b) Telophase: The telophase is the stage where the separation of the genetic material is complete. The two new nuclei are formed after division in this stage. 

(c) Anaphase:  The separation of the sister chromatids of a chromosome takes place during anaphase. The centromere breaks the chromosome into two sister chromatids and they are pulled towards the two poles by the spindle fibres in this stage of division. 

(d) S-phase:  The S-phase is the synthesis phase, which is part of the interphase stage of the cell cycle. The replication of DNA and the other cell organelles takes place during the S-phase to prepare the cell for division. ?

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