Figure 7
Fluorescent in situ hybridisation of metaphase chromosomes and interphase nuclei of species that evolved linked arrangement of rRNA genes: (A-C) Tagetes patula (2n = 48); (D-F) Helichrysum bracteatum (2n = 22); (G-I) Tripleurospermum maritimum (2n = 36), (J-L) Coreopsis major (2n = 24). The 35S and 5S loci are labelled in green and red, respectively. Arrows indicate a possible solo 5S locus in Coreopsis major.