A recurring debate in evolutionary biology is over the extent to which microevolutionary
processes operating within species can be extrapolated to explain macroevolutionary …

Rapid divergence and speciation can occur between populations with or without ecological
differences under selection for success in intraspecific social competition-competition in …

Animal mitochondrial DNA (mtDNA) is playing an increasingly important role as a genetic
marker in population and evolutionary biology. The popularity of this molecule derives, in …

We define a genetic species as a group of genetically compatible interbreeding natural
populations that is genetically isolated from other such groups. This focus on genetic …

Interpopulation gene flow in plants is mediated by a combination of pollen and seed
dispersal. The effectiveness of pollen and seeds in bringing about gene flow depends upon …

Mitochondrial (mt) DNA data on the comparative phylogeographic patterns of 19 species of
freshwater, coastal, and marine species in the southeastern USA are reviewed. Nearly all …

Studies of natural hybridization have generally addressed evolutionary ques-tions using one
of the three following frameworks:(i) taxonomy or systematics (57, 59, 73, 79, 111, 172);(ii) …

Simple sequence repeats (SSRs), consisting of tandemly repeated multiple copies of mono-,
di-, tri-, or tetranucleotide motifs, are ubiquitous in eukaryotic genomes and are frequently …

Interspecific hybridization occurs widelyacross a taxonomically diverse array of fishspecies.
Multiple factors typically interactto effect the outcome of hybridization events. Human …

In many insect species, males infected with microbes related to Wolbachia pipientis are
“incompatible” with uninfected females. Crosses between infected males and uninfected …