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Tag: "drifted" at biology news

Picky female frogs drive evolution of new species in less than 8,000 years

...ritz said, a subpopulation of the southern species drifted away not only from the northern species, but also from the southern. That was unexpected, he said. Moritz noted that geographic isolation in this "dinky bit of rainforest in Australia" has split many species, and that reinforcement at zones of recon...

Newly discovered birdlike dinosaur is oldest raptor ever found in South America

...utionary routes after the landmasses they occupied drifted apart." The paleontological field team was led by...rasia, composed of North America, Asia and Europe, drifted to the north; Gondwana, composed of the southern hemisphere continents plus India, drifted to the so...

Flu shot effective against drifted influenza, nasal spray vaccine less so

... as FluMist, might offer better protection against drifted viruses that had genetically changed between vacci...e of confusion about vaccine effectiveness against drifted viruses may stem from study design. Many vaccine evaluation studies rely on a clinical diagnosis of ...

NIAID DNA vaccine for H5N1 avian influenza enters human trial

...de II viruses in Indonesia and elsewhere that have drifted genetically from the initial strains detected in Southeast Asia. With this study, the investigators hope to learn whether new technologies, such as DNA vaccines, can provide protection against such viruses. "This vaccine is aimed at newer strains ...

Paper challenges 1491 Amazonian population theories

...estimates were 1 million, in the 70s that estimate drifted up to 4 million; and in the 1990s drifted up to 10 million. "We've now got a polarized community," he says. At one end, he says, is Anna...

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