During what stage of the cell cycle does replication occur?

Expert Answers

An illustration of the letter 'A' in a speech bubbles

Cell cycle consists of events that ultimately result in generation of two daughter cells from a single cell. These events include Interphase, mitotic phase and cytokinesis. The interphase is divided into three parts: G1, S and G2. It is during the S-phase (or synthesis phase), that replication takes place. During the preceding G1 phase (or growth phase), the cell starts gaining mass and grows in size, builds organelles and protein. In the S-phase, DNA replication takes place and the cell ends up with exactly double the amount of chromosomes, with each chromosome consisting of two chromatids. This is a relatively fast step, especially compared to the G1 phase and proceeds at a fast pace to protect the exposed base pairs.

hope this helps.

Approved by eNotes Editorial Team

We’ll help your grades soar

Start your 48-hour free trial and unlock all the summaries, Q&A, and analyses you need to get better grades now.

  • 30,000+ book summaries
  • 20% study tools discount
  • Ad-free content
  • PDF downloads
  • 300,000+ answers
  • 5-star customer support
Start your 48-Hour Free Trial