Comparative cytochemical measurements in the diploid-tetraploid species pair of hylid frogs Hyla chrysoscelis and H. versicolor

Authors:
  • KBK. Bachmann
    K. Bachmann
  • JBJ.P. Bogart
    J.P. Bogart
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Abstract
Hyla versicolor (2n = 48) is a tetraploid counterpart to H. chrysoscelis (2n = 24). Cytochemical measurements revealed that no cytological parameter of the two species conformed to the expected 2:1 ratio. Every cytological factor of the tetraploid appeared to have been regulated toward the diploid level. H. versicolor-to-H. chrysoscelis mean ratios and their standard errors were: DNA, 1.90 ± 0.03; nuclear histone, 1.70 ± 0.18; nuclear RNA, 1.63 ± 0.19; total nuclear protein, 1.46 ± 0.05; nuclear sizes, 1.42 ± 0.08.