Where are chromosomes replicated?
Before anaphase begins, the replicated chromosomes, called sister chromatids, are aligned at along the equator of the cell on the equatorial plane. The sister chromatids are pairs of identical copies of DNA joined at a point called the centromere.
Does chromosome replication occur mitosis?
In the eukaryotic cell cycle, chromosome duplication occurs during “S phase” (the phase of DNA synthesis) and chromosome segregation occurs during “M phase” (the mitosis phase). …
Where does the replication start?
DNA replication initiates at specific points, called origins, where the DNA double helix is unwound. A short segment of RNA, called a primer, is then synthesized and acts as a starting point for new DNA synthesis. An enzyme called DNA polymerase next begins replicating the DNA by matching bases to the original strand.
Where does the replication of chromosomes occur in the eukaryotic cell?
Comparisons between prokaryotic and eukaryotic DNA replication
|Prokaryotic DNA Replication||Eukaryotic DNA replication|
|Occurs inside the cytoplasm||Occurs inside the nucleus|
|Only one origin of replication per molecule of DNA||Have many origins of replication in each chromosome|
How are chromosomes replicated?
During the DNA synthesis (S) phase, the cell replicates its chromosomes. During the mitosis (M) phase, the duplicated chromosomes are segregated, migrating to opposite poles of the cell. The cell then divides into two daughter cells, each having the same genetic components as the parental cell.