Two sister-chromatids.
Each chromatid consists of a molecule of DNA together with associated proteins. There are two DNA molecules (sister-chromatids) following the replication of DNA midway through the preceding interphase. The sister-chromatids are therefore genetically identical.
chromatids
chromatids
The two identical joined chromosomes before cell division begins is called sister chromatids.
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identical sister chromatids that are joined together at a region called the centromere. Each sister chromatid contains a copy of the DNA molecule from the original chromosome.
chromatids
At the beginning of cell division a chromosome consists of two sister chromatids. The two chromatids of a chromosome are identical (they contain the same genes).
A duplicated chromosome consists of two identical sister chromatids joined at the centromere. Therefore, one half of a duplicated chromosome refers to one of these sister chromatids, which contains a copy of the genetic material from the original chromosome.
After DNA is duplicated, it is called a chromatid. Each duplicated chromosome consists of two sister chromatids, which are identical copies joined together at a region called the centromere. Visually, during cell division, chromatid pairs appear as X-shaped structures, with the centromere at the intersection. This configuration ensures proper distribution of genetic material to daughter cells during cell division.
A chromatid is one half of a duplicated chromosome, so typically there are 2 chromatids in a chromosome.
A duplicated chromosome, with two identical portions attached by their centromere, is referred to as a sister chromatid. Sister chromatids are produced during DNA replication and are important for ensuring accurate distribution of genetic material during cell division.
when each chromosome has been duplicated