The copied arm of a chromosome produced by DNA replication. They consist of coiled DNA around bands of histone protein.

Each of the two daughter strands of a duplicated chromosome joined at the centromere during mitosis and meiosis. www.biotechwithitaly.com/nw_glossary_cd.html-- One of the pair of stands, formed by longitudinal splitting of a chromosome that are joined by a single centromere in somatic cells during mitosis; one of tetrad of strands formed by lengthwise splitting of paired chromosomes during the diplotene stage of meiosis. www.sra.org/glossary.htm

One of the two identical DNA helices that comprise a metaphasic chromosome. The two chromatids result from the replication of the DNA during the S stage of the Cell Cycle.

the two daughter strands of a duplicated chromosome that are joined by a single centromere; upon division of the centromeres, the sister chromatids become separate chromosomes

bisc333 after chromosomes replicate, two chromatids are joined to each other at the centromere