Speciation is the process by which barriers to gene flow evolve between populations.
Although we now know that speciation is largely driven by natural selection, knowledge of …

Sex chromosomes are havens for intragenomic conflicts. The absence of recombination
between sex chromosomes creates the opportunity for the evolution of segregation …

Hybrid sterility (HS) is an early postzygotic reproductive isolation mechanism observed in all
sexually reproducing species. Infertility of hybrids prevents gene flow between incipient …

Species pairs often become genetically incompatible during divergence, which is an
important source of reproductive isolation. An idealized picture is often painted where …

Two robust rules have been discovered about animal hybrids: Heterogametic hybrids are
more unfit (Haldane's rule), and sex chromosomes are disproportionately involved in hybrid …

Research over the past three decades has shown that ecology-based extrinsic reproductive
barriers can rapidly arise to generate incipient species—but such barriers can also rapidly …

Hybrid sterility contributes to speciation by preventing gene flow between related taxa.
Prdm9, the first and only hybrid male sterility gene known in vertebrates, predetermines the …

Haldane's rule is one of the 'two rules of speciation'. It states that if one sex is 'absent, rare or
sterile'in a hybrid population, then that sex will be heterogametic. Since Haldane first made …

Although the biological utilities of endogenous RNAi (endo-RNAi) have been largely
elusive, recent studies reveal its critical role in the non-model fruitfly Drosophila simulans to …

Dominance is usually considered a constant value that describes the relative difference in
fitness or phenotype between heterozygotes and the average of homozygotes at a focal …