A chromatid is one half of a duplicated chromosome. Before replication, one chromosome is composed of one DNA molecule. In replication, the DNA molecule is copied, and the two molecules are known as chromatids.

What is a chromatid simple definition?

A chromatid is one of two identical halves of a replicated chromosome. ... Following DNA replication, the chromosome consists of two identical structures called sister chromatids, which are joined at the centromere.

What is the best definition of chromatid?

Definition. noun, plural: chromatids. Either one of the two strands joined together by a single centromere, formed from the duplication of the chromosome during the early stages of cell division and then separate to become individual chromosome during the late stages of cell division.