Describe the complete cell cycle including when the single strand becomes two strands and what role cohesins and centromere play throughout?

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Describe the complete cell cycle including when the single strand becomes two strands and what role cohesins and centromere play throughout?



The cell cycle consists of four major phases (in the additional G0 phase a cell exits from the cell cycle and remains suspended in a stationary phase that resembles G1). the two double helices are held tightly together along their lengths by binding proteins called cohesins, and the chromosome now consists of two sister chromatids each having a DNA double helix. The sister chromatids becomes more obvious in late S phase when most of the cohesins are removed except for some at the centromere, which continue to hold the two sister chromatids together. The sister chromatids finally separate in M phase to form two independent daughter cells.

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