Examine the image below, and pay special attention to the phase circled and indicated by the black arrow. In 2 sentences, identify the circled phase and explain why this phase is necessary for the remainder of the cycle to occur correctly.

Question

Grading Considerations:

Your answer must include:

2 complete sentences
The correct name of the phase indicated by the arrow
An explanation of why this phase is necessary

Answers longer than 2 sentences will not be considered. Answering concisely and to the point is evidence of your understanding of the topic.

Answer 1

The circled phase indicated by the black arrow is the "S phase" (synthesis phase) of the cell cycle. This phase is necessary because it is during the S phase that DNA replication occurs, ensuring that each daughter cell receives an identical set of chromosomes during cell division.