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Документ Inheritance of parental genomes by a hybrid form Rana “esculenta” (Amphibia, Ranidae)(Russian Journal of Genetics, 2009) Morozov-Leonov, S.Yu.; Mezhzherin, S.V.; Nekrasova, O.D.; Shabanov, D.A.; Korshunov, A.V.; Krutyak, F.F.In this study, quantitative analysis of paternal genome inheritance by a hybrid form Rana “esculenta” (= Rana esculenta L., 1758 × Rana ridibunda Pall., 1881) (Amphibia, Ranidae) was examined. The hybrid form examined was characterized by a polymodal mode of inheritance (genome of any of the parental species can be inherited). The absence of correlation between the proportion of normal gametes and either sex or ploidity of the producer was demonstrated. The gametes produced could be both haploid and diploid (hybrid or homozygous). The mechanism of alloploid reproduction is discussed.Документ The ploidy and genetic structure of hybrid population of water frogs Pelophylax esculentus complex (Amphibia, Ranidae) of Ukraine fauna(Cytology and Genetics, 2010) Mezhzherin, S.V.; Morozov-Leonov, S.Yu.; Rostovskaya, O.V.; Shabanov, D.A.; Sobolenko, L.Yu.The complex study, including allozyme variability and cytometry of hybrid populations of green frogs Pelophylax esculentus (L., 1758) complex has confirmed that the only region of Ukraine where allodip loid are encountered frequently is the Severski Donets basin (9% of all hybrids). In other areas, only two poly ploidy hybrids (0.9%) and one probably autopolyploid individual of each parental species have been regis tered. According to allozyme specters, all three polyploidy hybrids from the Severski Donets basin were males and belonged to biotype P. esculentus (=lessonae) – 2 ridibundus, and their population in this region has halved during the past decade.