If the chromosomes do not double during s phase how do they divide equally during mitosis?

do the chrmosomes double during prophase?

Asked by prakriti12oct | 24th Sep, 2019, 09:21: PM

Expert Answer:

During S phase, all of the chromosomes are replicated. Following replication, each chromosome now consists of two sister chromatids. Thus, the amount of DNA in the cell has effectively doubled, even though the ploidy, or chromosome count, of the cell remains at 2n.

Once the chromosomes have replicated, the cell contains double the normal number chromosomes until the cell divides. After cell division, each cell receives a single chromosome, thereby restoring the ploidy level of the cell.

Answered by Sheetal Kolte | 26th Sep, 2019, 11:36: AM