Multiple choice

In a somatic cell cycle, DNA synthesis takes place in which of the following phases?

  1. G1 phase

  2. G2 phase

  3. S phase

  4. Prometaphase

  5. Preprophase
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The major event in S phase is DNA replication. The goal of this process is to create exactly two identical semi-conserved chromosomes. The cell prevents more than one replication from occurring by loading pre-replication complexes onto the DNA at replication origins during G1 phase, which are dismantled in S phase as replication begins.

Keep practicing — related questions