Hybridization, or interbreeding between different taxa, was traditionally considered to be
rare and to have a largely detrimental impact on biodiversity, sometimes leading to the …

In the past decade, advances in genome sequencing have allowed researchers to uncover
the history of hybridization in diverse groups of species, including our own. Although the …

Hybridization may drive rare taxa to extinction through genetic swam**, where the rare
form is replaced by hybrids, or by demographic swam**, where population growth rates …

Gene flow is a fundamental evolutionary force in adaptation that is especially important to
understand as humans are rapidly changing both the natural environment and natural levels …

Species can be defined as populations that are diagnosably distinct, reproductively isolated,
cohesive, or exclusive groups of organisms. Boundaries between species in sympatry are …

Introgression is emerging as an important source of novel genetic variation, alongside
standing variation and mutation. It is adaptive when such introgressed alleles are …

Adaptive genetic variation has been thought to originate primarily from either new mutation
or standing variation. Another potential source of adaptive variation is adaptive variants from …

Abstract Approximately 2–4% of genetic material in human populations outside Africa is
derived from Neanderthals who interbred with anatomically modern humans. Recent studies …

Human impact is noticeable around the globe, indicating that a new era might have begun:
the Anthropocene. Continuing human activities, including land‐use changes, introduction of …

Many emerging invasive species display evidence of rapid adaptation. Contemporary
genetic studies demonstrate that adaptation to novel environments can occur within 20 …