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When thymidine synthesis is inhibited eukaryotic cells will be arrested at end of the s phase |
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Answer» is the period of wholesale DNA SYNTHESIS during which the cell replicates its genetic content; a normal diploid somatic cell with a 2N COMPLEMENT of DNA at the beginning of S phase acquires a 4N complement of DNA at its end. (Recall that N = 1 COPY of each chromosome per cell [haploid]; 2N = 2 copies [diploid].) The duration of S phase may vary from only a few minutes in rapidly dividing, early embryo cells to a few hours in most somatic cells. Early embryo cells generally “live off” the accumulated stores of maternal RNA and proteins present in the egg and are transcriptionally silent, whereas cells |
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