Immunological Resolution of a Diploid-Tetraploid Species Complex of Tree Frogs

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Science  02 Sep 1977:
Vol. 197, Issue 4307, pp. 1012-1013
DOI: 10.1126/science.197.4307.1012


Micro-complement fixation studies of eastern and western populations of the North American tree frog Hyla chrysoscelis reveal they have been genetically isolated for about 4 million years. Immunological comparisons of populations of the cryptic tetraploid Hyla versicolor indicate a recent origin, from hybridization between eastern and western H. chrysoscelis.