DNA-copying errors most likely occur during the S phase of the cell cycle. This is the phase where DNA synthesis (replication) takes place, and errors can occur as the DNA is being copied.
G1-Growth
S-DNA synthesis
G2-Growth and preparation for
mitosis
M-Mitosis
Q
G1
(cell division)
G2
M
Scientists have reported that more than 95% of the factors that lead to some types of cancers are caused by random DNA- copying errors. During which phase of the cell cycle do these DNA-copying errors most likely occur?
G₁ phase
M phase
G₂ phase
S phase
1 answer