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Centromere

The centromere is the point where two identical sister chromatids join.

The centromere is a region of highly condensed DNA near the centre of a chromosome.

This essential chromosomal sequence is found in all eukaryotic chromosomes. Centromeres do not code for RNA or polypeptides. Centromeres are therefore classified as non-coding DNA.

Sister chromatids are the identical chromosomes that are the result of DNA replication.

The chromatids remain attached until the cell prepares for mitosis or meiosis.

These chromosomes are in metaphase. The centromere of one is indicated in red.
These chromosomes are in metaphase. The centromere of one is indicated in red.