In the cell cycle of Saccharomyces cerevisiae,the appearance of a bud on the surface of a cell indicates that the cell

Question

Quizplus · Accepted Answer

The appearance of a bud on the surface of a cell in Saccharomyces cerevisiae indicates that the cell is reaching the end of G1 phase and preparing to enter S phase, not M phase (A). Mutations in genes regulating G1/S transition (such as the cyclin-dependent kinase Cln/CDK) can affect budding, but such mutations are not specified in the question, so choice B is incorrect. The haploid or diploid state of the cell (C) is not necessarily indicated by the appearance of a bud. Mutations in genes regulating G2/M transition (such as the cyclin-dependent kinase Clb/CDK) would not affect budding, which occurs earlier in the cell cycle, so choice D is incorrect. Therefore, the best choice is E.

In the Cell Cycle of Saccharomyces Cerevisiae,the Appearance of a Bud