Fig. 4

Relative DNA content of blood cell nuclei measured by flow cytometry and cell parameters of erythrocytes. All histograms depict the measurements of samples mixed with the internal control of diploid standard (Gallus domesticus). The measurements support diploidy in L. guttata (a), triploidy in L. guentherpetersi (b) and tetraploidy in the male hybrid (c). Boxplots show maximum cell length MCL (d), maximum nuclei length MNL (e) and cell projection area CPA (f) of erythrocytes in L. guttata (green), L. guentherpetersi (yellow) and 4n-hybrid (blue).