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Chromatides are the two identical copies of a chromosome that are joined together at a specific region called the centromere after DNA replication during cell division (mitosis or meiosis). They represent the sister copies of the genetic information contained within a single chromosome.
Chromatides play a vital role in ensuring accurate inheritance of genetic information during cell division:
Imagine a chromosome as a long string containing genetic instructions. Before cell division, this string replicates itself to create two identical copies. These copies are the sister chromatids, attached at a central point (centromere). During cell division, the centromere breaks apart, and spindle fibers pull each chromatid towards opposite ends of the dividing cell. As a result, each daughter cell receives one complete set of genetic instructions (one copy of each chromosome).
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