In a hypothetical organism with a diploid number of 8, how many sister chromatids would be present after DNA replication, and why?

• A. 8 sister chromatids, because the diploid number is halved during replication.
• B. 16 sister chromatids, because each of the 8 chromosomes is replicated into two identical sister chromatids.
• C. 4 sister chromatids, as only one chromosome from each pair is replicated.
• D. 32 sister chromatids, due to doubling of the genetic material.

Answer: (B)