title: A genetic study of various enzyme polymorphisms in Pleurodeles waltlii (Urodele amphibian). I. Lactate dehydrogenase-B and glucose-6-phosphate dehydrogenase.
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.
mesh_terms: D000818:Animals; D004592:Electrophoresis, Starch Gel; D005954:Glucosephosphate Dehydrogenase / Q000235:genetics*; D007770:L-Lactate Dehydrogenase / Q000235:genetics*; D011110:Polymorphism, Genetic; D014562:Caudata / Q000235:genetics*
chemical_list: D007770:L-Lactate Dehydrogenase; D005954:Glucosephosphate Dehydrogenase