Research Article

A Short-Term Advantage for Syngamy in the Origin of Eukaryotic Sex: Effects of Cell Fusion on Cell Cycle Duration and Other Effects Related to the Duration of the Cell Cycle—Relationship between Cell Growth Curve and the Optimal Size of the Species, and Circadian Cell Cycle in Photosynthetic Unicellular Organisms

Figure 2

Cell cycle, cycle graph as shown in regulation studies (a), (b) and proposed cycle profile graph (c). (a) Phases of the present eukaryotic cell cycle. (b) Common cycle graph as shown in regulation studies. The duration of S, G2, and M tends to be constant in each species, although the duration of G1 varies depending on the richness of the environment. (c) Proposed graph, including cycle profile and critical sizes of checkpoints.
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(a)
746825.fig.002b
(b)
746825.fig.002c
(c)