Abstract
On starch gel electrophoresis of erythrocyte hemolysates of Pleurodeles waltlii (Urodele Amphibian), both lactate dehydrogenase-B (LDH-B) and glucose-6-phosphate dehydrogenase (G6PDH) show polymorphism that depends on a pair of autosomal codominant alleles, confirmed by analysis of gynogenesis progeny. Diploid gynogenesis results from fusion of the female pronucleus with the second polar body. The heterozygous state of a female for a given character is maintained in certain progeny when crossing-over occurs between the locus in question and the centromere. So the high proportion of heterozygotes (45.7% for LDH-B and 76% for G6PDH) indicates the high frequency of crossing-over and hence the large distance between each of the loci and the centromere.
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This work was carried out under the programme of the Equipe de Recherche Associée No. 327 (CNRS) and partially supported by the University of Toulouse-Le Mirail and by a grant from the Centre National de la Recherche Scientifique (ATP “Biochimie du Developpement,” 1980–1982).
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Gasser, F., Ferrier, V., Jaylet, A. et al. A genetic study of various enzyme polymorphisms in Pleurodeles waltlii (Urodele Amphibian). I. Lactate dehydrogenase-B and glucose-6-phosphate dehydrogenase. Biochem Genet 21, 527–534 (1983). https://doi.org/10.1007/BF00484444
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DOI: https://doi.org/10.1007/BF00484444