During S Phase, Chromosomes are Converted to What Form

Question

During S phase, chromosomes are converted to what form?
A) karyotypes
B) sister chromatids
C) chromatin
D) centrosomes

Accepted Answer

During S phase of the cell cycle, DNA replication occurs and each chromosome is duplicated, resulting in two identical sister chromatids. Therefore, the chromosomes are converted to sister chromatids during S phase.