References in periodicals archive ?
The team has concluded that the wide interbreeding seen in the Neanderthal population at that time is responsible for triggering health issues in modern day homo sapiens.
Many researchers argue the interbreeding scenario is more likely, because it fits the genetic patterns seen in studies that compared genomes from many modern humans.
Ms Shapiro, said climate change in Arctic regions could see brown and polar bears interbreeding once again.
Our research shows cause for major ecological concern because not only are the offspring capable of out-competing crucian carp but they are also capable of reproducing and further interbreeding with pure stocks.
Mixing genes through interbreeding can eliminate survival traits--or result in infertile offspring.
The fish have been threatened by degradation of their habitat because of grazing of livestock and by interbreeding with non-native rainbow trout.
The non-natives are more adaptable to varying habitat, and resulting interbreeding and competition have not only affected the purity of the westslope cutthroat's gene pool but have led to a takeover of the westslope cutthroat's historic range on the east and west slopes of the Continental Divide.
In such instances, there is a wide "gray zone" of speciation - an intermediate state in which it is hard to distinguish one species from the other, and within which interbreeding is still possible to some extent.
A molecular window into interbreeding between Neandertals and ancient humans suddenly flung open.
TEHRAN (FNA)- Scientists discovered long history of interbreeding among at least four different types of early humans living in Europe and Asia dating back 50,000 years ago.
Professor Cooper, Director of the University of Adelaide's Australian Centre for Ancient DNA, said that in mainland Asia, neither ancient human specimens, nor geographically isolated modern Indigenous populations have Denisovan DNA of any note, indicating that there has never been a genetic signal of Denisovan interbreeding in the area.
Infectious diseases common in farm-bred pens can spread into the surrounding waters (see "Wild and Free," Currents, November/December 1998), and interbreeding of wild and escaped farmed salmon is a threat.