Figure 5.

Linkages within and between chromosomes in interphase nuclei. A, Chromocenter-loop model for the organization of chromosome 4 of Arabidopsis. Heterochromatic regions, including 5S and rDNA, compartmentalize into one chromocenter with euchromatin loops around it. Me = highly methylated. Ac = enriched in acetylated histone H4. Taken from Fransz et al. (2002). In the interphase nucleus fewer than 10 centromeres are displayed indicating some fusion. B, Intra and inter chromosomal links in rice nuclei as revealed by HiC mapping. Reprinted from Dong et al. (2018). The centromeres are marked with the orange bars.