CHROMATID

Chromatid

A chromatid is one copy of a duplicated chromosome, which generally is joined to the other copy by a centromere, for the process of nuclear division . They are normally identical but may have slight differences in the case of mutations, in which case they are heterozygous. They are called sister chromatids so long as they are joined by the centromeres. When they separate, the strands are called daughter chromosomes . Before replication, one chromosome is composed of one DNA molecule and after there are two DNA molecules. This is because DNA replication increases the amount of DNA and does not increase the number of chromosomes.

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chromatid

Noun

  1. Either of the two strands of a chromosome that separate during mitosis.


The above text is a snippet from Wiktionary: chromatid
and as such is available under the Creative Commons Attribution/Share-Alike License.

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