chromatid

[ kroh-muh-tid ]

noun

, Genetics.

1. one of two identical chromosomal strands into which a chromosome splits longitudinally preparatory to cell division.

chromatid

/ ˈkrəʊmətɪd /

noun

1. either of the two strands into which a chromosome divides during mitosis. They separate to form daughter chromosomes at anaphase

chromatid

/ krō′mə-tĭd /

1. Either of the two strands formed when a chromosome duplicates itself as part of the early stages of cell division. The chromatids are joined together by a single centromere and later separate to become individual chromosomes.
2. See more at meiosis

Word History and Origins

Origin of chromatid¹

First recorded in 1895–1900; chromat- + -id ³

Example Sentences

The frequency of meiotic double-strand breaks correlates with the number of chromatid structures called ‘loop–axis units’.

From Nature

The maintenance of telomeres—the structures of repetitive sequences as the end of a chromatid—is essential to the health of a cell.

From Science Magazine

Defects in chromosome segregation can arise directly through defects in the mitotic checkpoint, sister chromatid cohesion, spindle geometry and spindle dynamics.

From Nature

These chromatic errors of systems, which are achromatic for two colours, are called the ``secondary spectrum,'' and depend upon the aperture and focal length in the same manner as the primary chromatid errors do.

From Project Gutenberg

Finally, during recombination, chromatid arms are exchanged between the two homologous chromosomes.

From Nature