The patterns of postmating reproductive isolation in general follow Haldane's rule that the
heterogametic sex is much more likely to become inviable or sterile than the homogametic�…

The diploid hybridogenetic frog Rana esculenta, an interspecific hybrid of R. ridibunda and
R. lessonae, usually transmits its ridibunda genome to progeny: the lessonae genome is lost�…

Evolution of reproductive isolation as a byproduct of genetic divergence in isolated
populations is the dominant (albeit not exclusive) mode of speciation in sexual animals. But�…

Abstract Abstract The hemiclonal waterfrog Rana esculenta (RL genotype), a bisexual
hybrid between R. ridibunda (RR) and R. lessonae (LL), eliminates the L genome from its�…

A strong effect of homozygous autosomal regions on reproductive isolation was found for
crosses between the species in the Drosophila simulans clade. Second chromosome�…

All‐hybrid populations of the water frog, Rana esculenta, are exceptional in consisting of
independently and to some extent sexually reproducing interspecific hybrids. In most of its�…

The first cytologically confirmed natural hybrids between the diploid-tetraploid gray treefrogs,
Hyla chrysoscelis and H. versicolor, were two triploid males initially detected by their�…

Abstract Abstract.—In the Australian myobatrachid frog Crinia georgiana simultaneous
polyandry occurs in about half of all matings, which leads to multiple paternity, but reduced�…

Species that evolved through ecological speciation and that lack intrinsic genetic
incompatibilities may nonetheless be maintained by extrinsic postmating isolating barriers�…

Some systematists (references in Frost and Hillis) believe that reproductive compatibility
should be considered in the same manner as a shared ancestral morphological character (a�…