what is mean by chromatid?
Answers
Hi,
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 (during anaphase of mitosis and anaphase 2 of meiosis), the strands are called daughter chromosomes (although having the same genetic mass as the individual chromatids that made up its parent, the daughter "molecules" are still referred to as chromosomes much as one child is not referred to as a single twin). 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.
A Chromatid is one of two identical halves of a replicated chromosome
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