<P> G phase is a period of rapid cell growth and protein synthesis during which the cell prepares itself for mitosis . Curiously , G phase is not a necessary part of the cell cycle , as some cell types ( particularly young Xenopus embryos and some cancers ) proceed directly from DNA replication to mitosis . Though much is known about the genetic network which regulates G2 phase and subsequent entry into mitosis , there is still much to be discovered concerning its significance and regulation , particularly in regards to cancer . One hypothesis is that the growth in G phase is regulated as a method of cell size control . Fission yeast ( Schizosaccharomyces pombe ) has been previously shown to employ such a mechanism , via Cdr2 - mediated spatial regulation of Wee1 activity . Though Wee1 is a fairly conserved negative regulator of mitotic entry , no general mechanism of cell size control in G2 has yet been elucidated . </P>
<P> G phase is a period of rapid cell growth and protein synthesis during which the cell prepares itself for mitosis . Curiously , G phase is not a necessary part of the cell cycle , as some cell types ( particularly young Xenopus embryos and some cancers ) proceed directly from DNA replication to mitosis . Though much is known about the genetic network which regulates G2 phase and subsequent entry into mitosis , there is still much to be discovered concerning its significance and regulation , particularly in regards to cancer . One hypothesis is that the growth in G phase is regulated as a method of cell size control . Fission yeast ( Schizosaccharomyces pombe ) has been previously shown to employ such a mechanism , via Cdr2 - mediated spatial regulation of Wee1 activity . Though Wee1 is a fairly conserved negative regulator of mitotic entry , no general mechanism of cell size control in G2 has yet been elucidated . </P>
what does g2 do in the cell cycle
what does g2 do in the cell cycle
rapid cell growth and protein synthesis
rapid cell growth and protein synthesis