Chromatid
one of two identical “sister” parts of a duplicated chromosome. Chromatids are counted as one chromosomes and sisters chromatids are also counted as one chromosome.
In cell biology, a chromatid is one of the two identical copies of DNA that are held together by a centromere and form a chromosome during cell division. Chromatids are produced through the process of DNA replication, where the genetic material of a cell is duplicated before cell division.
During cell division, each chromatid is separated from its duplicate to form individual chromosomes that are distributed to the newly forming daughter cells. The separation of chromatids is a critical step in the process of cell division, as it ensures that the genetic material is appropriately distributed between the daughter cells.
The term “chromatid” is often used interchangeably with “sister chromatid”, which refers to the two identical copies of a chromosome that are produced during DNA replication. Together, sister chromatids make up a single chromosome that is then separated during cell division.
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