Figure 4 : Schematic showing the rearrangements between chromosomes 7 and 8.

From: The genome sequences of Arachis duranensis and Arachis ipaensis, the diploid ancestors of cultivated peanut

Figure 4

These rearrangements gave rise to the small, repeat-poor chromosome, represented by pseudomolecule Aradu.A08 (equivalent to cytogenetic A09), which is characteristic of A genomes, and Aradu.A07, which has only one normal euchromatic arm (the upper one). Syntenous chromosomal segments are represented by blocks of the same color. The Ty3-gypsy and non-autonomous retroelement distributions are represented in gray. Note the low repetitive content of Aradu.A08 and the 'knob' of repeat-rich DNA in the upper distal region. This unusual composition seems likely to account for the distinct chromatin condensation of this chromosome pair (Supplementary Fig. 23).