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The rapid development of molecular biology and genetics has led to renewed interest in embryology, comparative embryology, and studies of the relations between ontogeny and phylogeny. In fact, genes have been identified which are involved in the form
Publikováno v:
Hereditas. 117(3)
Four specimens with an aberrant sex chromosome constitution were found in natural populations of the common vole (Microtus arvalis). Two females had an XO sex chromosome constitution and single males were 2n = 47, XXY and 2n = 47, XYY, respectively.