Fig. 4From: The origin and evolution of a two-component system of paralogous genes encoding the centromeric histone CENH3 in cerealsThe exon-intron structure of the CENH3 genes in the study cereals. a: αCENH3; b: βCENH3. The upper scale shows the dimensions in bp. The positions of stop codons in the third exon of βCENH3 localized on the 1H chromosomes of barley are shown by crosses. Exons appear as finger-post arrowsBack to article page