Question
3) When are the chromosomes copied?
Answer
4.1
(175 Votes)
Aneira
Master · Tutor for 5 years
Answer
The chromosomes are copied during the S phase of the cell cycle.
Explanation
## Step 1The process of chromosome duplication is a crucial event in the cell cycle. The cell cycle is a series of stages that cells undergo to grow and divide. It is generally divided into four main stages: G1 phase, S phase, G2 phase, and M phase. ## Step 2Chromosomes are copied during the S phase, which stands for "synthesis" phase. During this stage, the entire DNA content in the nucleus of the cell is replicated. This replication process is essential for cell division as it ensures that each new daughter cell receives an identical set of chromosomes. ## Step 3After the S phase, the cell enters the G2 phase, where it prepares for mitosis (M phase), the process of cell division. The accurate copying of chromosomes is essential for the maintenance of genetic stability and is tightly regulated to prevent errors that could lead to genetic disorders or diseases such as cancer.