At the end of the s phase, each chromosome consists of two chromatids attached at the centromere. During mitosis, chromosomes are duplicated and divided evenly between two cells During interphase, the parent cell’s chromosomes are replicated, but they aren’t yet visible
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They’re just floating around in the form of loosely collected chromatin.
During the s phase, dna is synthesized to make two identical copies
Each chromosome replicates to make a paired chromatid These chromatids are joined by a protein link called a kinetochore which holds the pair together until mitosis. In the s phase (synthesis phase), dna replication results in the formation of two identical copies of each chromosome—sister chromatids—that are firmly attached at the centromere region. The most basic function of the cell cycle is to duplicate accurately the vast amount of dna in the chromosomes and then segregate the copies precisely into two genetically identical daughter cells
These processes define the two major phases of the cell cycle. 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.
Then, at a critical point during interphase (called the s phase), the cell duplicates its chromosomes and ensures its systems are ready for cell division.
Duplicate each chromosome during the s phase of the cell cycle This produces dyads, each made up of 2 identical sister chromatids These are held together by a ring of proteins called cohesin Condense the chromosomes into a compact form
This requires atp and protein complexes called condensins. The phase when chromosomes are replicated is the s phase (synthesis phase) of the cell cycle, which is part of interphase.
