Evidence from yeast suggests that the maturation-promoting factor of sea urchins is
A) a cyclin.
B) p21.
C) RB.
D) a Cdk.
E) a Cdk-cyclin phosphatase.

Question

Quizplus · Accepted Answer

The maturation-promoting factor (MPF) in sea urchins has been shown to be a cyclin-dependent kinase (Cdk), which is activated by cyclin. This is consistent with the evidence from yeast, where a similar complex was identified as a Cdk-cyclin complex. Therefore, choice D) a Cdk, is the best option.

Evidence from Yeast Suggests That the Maturation-Promoting Factor of Sea