A) During entire prophase
B) During telophase
C) During S-phase
D) During \[{{\text{G}}_{\text{2}}}\text{-stage}\]of prophase
Correct Answer: C
Solution :
Histone proteins are basic proteins and are used in packing of eukaryotic (absent in prokaryotes) DNA. DNA and histones together comprise chromatin, forming bulk of the eukaryotic chromosomes. Histones are of five major kinds \[{{\text{H}}_{\text{1}}}\text{,}{{\text{H}}_{\text{2A}}}\text{,}{{\text{H}}_{\text{2B}}}\text{,}{{\text{H}}_{\text{3}}}\]and\[{{\text{H}}_{\text{4}}}\].\[{{\text{H}}_{\text{1}}}\]Histones link neighboring nucleosomes (fundamental. packing units of an eukaryotic chromosome) while other are elements of nucleosome structure. During S-phase of cell cycle, of synthesa histone proteins take place, because at this stage number of chromosomes become double that of somatic number.
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