Cover illustration: The inset cover picture shows a fluorescent in situ hybridization on an early metaphase of sugar beet (Beta vulgaris; 2n = 18; chromosomal DNA fluorescing blue). A major centromeric satellite is located on all chromosomes (green signals), while the amplification of a complex variant of this satellite family is restricted to the centromeres on a subset of chromosomes (red signals). See Menzel et al. (pp. 521-530).
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