Does geography matter in hybrid sterility in house mice

摘要: Hybrid sterility can prevent gene flow between diverging subpopulations and hence might contribute to speciation. The hybrid 1 (Hst1) was originally described in male progeny obtained from a cross laboratory inbred mouse strains C57BL/10 C3H, wild Mus musculus musculus, sampled at localities Prague, Czech Republic. This study asked whether the presence of associated with Hst1 is limited one local population or extended over geographically distant regions. We studied derived M. m. Studenec, Republic, 160 km south-east crossed reciprocally mice. Spermatogenesis examined 251 males; among them 109 males (43.4%) were sterile 142 (56.6%) fertile. Sterile had significantly lower testis mass epididymis compared fertile males. size reproductive organs dependent on reciprocity within classes Although our phenotype data resemble those presented original description Hstl, molecular analysis revealed incomplete segregation fertility markers Hstl region some families. Therefore, there are probably additional genes affecting that polymorphic musculus.