During morula development, the divisions are more rapid than in most normal adult cells and the individual cells get progressively smaller. Which stage(s) of the cell cycle are probably truncated (made shorter)?
A)G1 and G2
B)S phase
C)M phase
D)both M phase and S phase
E)All of the stages are truncated.

Question

Quizplus · Accepted Answer

During morula development, the cell cycle is characterized by rapid cell divisions with little to no growth of individual cells between divisions. This suggests that the G1 and G2 phases, which are typically responsible for cell growth and preparation for DNA replication or mitosis, are truncated to allow for the rapid increase in cell number without significant increase in overall size.

During Morula Development, the Divisions Are More Rapid Than in Most