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  4. At what stage of the cell cycle are histone proteins synthesised in a eukaryotic cell?

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Q. At what stage of the cell cycle are histone proteins synthesised in a eukaryotic cell?

Uttarkhand PMTUttarkhand PMT 2010

Solution:

During S phase of the cell cycle, the histone proteins are synthesized in a eukaryotic cell. The major event in S phase is DNA replication. The goal of this process is to create exactly two identical semi-conserved chromosomes. The cell prevents more than one replication from occurring by loading pre-replication complexes onto the DNA at replication origins during $G _{1}$ phase which is dismantled in $S$ phase as replication begins.