The nucleolus usually has at least one papilla until its disappearance at the metaphase. 2. The chromatin in the young microspore mother cell occurs in the form of granules or chromomere aggregates ...

The basic repeating structural (and functional) unit of chromatin is the nucleosome, which contains eight histone proteins and about 146 base pairs of DNA (Van Holde, 1988; Wolffe, 1999).

Chromatin is a flexibly joined chain of nucleosomes that exists inside the nucleus of eukaryotic cells and has been described as a 'bead on a string'. Chromatin organization strengthens DNA for ...