Question

the period of interphase when dna is replicated is the _______.
a) g₁ phase.
b) s phase.
c) g₂ phase.
d) mitosis phase.

Explanation:

To solve this, we recall the phases of interphase: \( G_1 \) (cell growth, prep for DNA replication), \( S \) (DNA synthesis/replication), \( G_2 \) (prep for mitosis). Mitosis is not interphase. So DNA replication occurs in \( S \) phase.

Answer:

B. S phase.