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SlideshowReport

A mitotic chromosome

Description

An electron microscope image of a human chromosome during the metaphase stage of mitosis.

The constriction at the centromere and the lengthwise division into sister chromatids are clearly visible.

The hairy-looking surface is made of loops of highly coiled chromatin.

The chromatin of eukaryotes consists of DNA complexed with histones and nonhistone proteins.
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