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Species
hideIn biology, a species is:
There are many definitions of what kind of unit a species is (or should be). A common definition is that of a group of organisms capable of interbreeding and producing fertile offspring, and separated from other such groups with which interbreeding does not (normally) happen. Other definitions may focus on similarity of DNA or morphology. Some species are further subdivided into subspecies, and here also there is no close agreement on the criteria to be used.
For more information about Species, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with species
Student sleuths using DNA reveal zoo of 95 species in NYC homes -- and new evidence of food fraud
Dec 28, 2009 |
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Two New York City high school students exploring their homes using the latest high-tech DNA analysis techniques were astonished to discover a veritable zoo of 95 animal species surrounding them, in everything ...
First molars provide insight into evolution of apes, humans
Dec 28, 2009 |
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(PhysOrg.com) -- The timing of molar emergence and its relation to growth and reproduction in apes is being reported by two scientists at Arizona State University's Institute of Human Origins in the Dec. 28 ...
Scientists show that plants have measure of the shortest day
Dec 23, 2009 |
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(PhysOrg.com) -- It is not only people who feel the effects of short winter days - new research by the University of Edinburgh and the University of Warwick has shed light on how plants calculate their own winter solstice. ...
Loud and lazy but didn't chew gum: Ancient koalas
Other Sciences / Archaeology & Fossils
Dec 19, 2009 |
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(PhysOrg.com) -- Skull fragments of prehistoric koalas from the Riversleigh rainforests of millions of year ago suggest they shared the modern koala's "lazy" lifestyle and ability to produce loud "bellowing" ...
First volume of microbial encyclopedia published
Dec 23, 2009 |
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The Earth is estimated to have about a nonillion (1030) microbes in, on, around, and under it, comprised of an unknown but very large number of distinct species. Despite the widespread availability of microbi ...
Science's breakthrough of the year: Uncovering 'Ardi'
Dec 17, 2009 |
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The research that brought to light the fossils of Ardipithecus ramidus, a hominid species that lived 4.4 million years ago in what is now Ethiopia, has topped Science's list of this year's most significant s ...
Study shows loss of 15-42 percent of mammals in North America
Dec 17, 2009 |
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If the planet is headed for another mass extinction like the previous five, each of which wiped out more than 75 percent of all species on the planet, then North American mammals are one-fifth to one-half the way there, according ...
Among Apes, Teeth Are Made for the Toughest Times (w/ Video)
Dec 16, 2009 |
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(PhysOrg.com) -- The teeth of some apes are formed primarily to handle the most stressful times when food is scarce, according to new research performed at the National Institute of Standards and Technology. The findings ...
Limestone leaf warbler: New bird species discovered
Dec 21, 2009 |
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(PhysOrg.com) -- A diminutive, colorful bird living in the rocky forests of Laos and Vietnam has been discovered by a team of scientists from the Wildlife Conservation Society, Lao PDR Department of Forestry, Swedish University ...
Late-surviving megafauna exposed by ancient DNA in frozen soil
Dec 15, 2009 |
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Extinct woolly mammoths and ancient American horses may have been grazing the North American steppe for several thousand years longer than previously thought. After plucking ancient DNA from frozen soil in ...
Researchers find reproductive germ cells survive and thrive in transplants, even among species
Dec 15, 2009 |
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Reproductive researchers from the University of Pennsylvania and The Children's Hospital of Philadelphia have succeeded in isolating and transplanting pure populations of the immature cells that enable male ...
The mammoths' swan song revised
Other Sciences / Archaeology & Fossils
Dec 14, 2009 |
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This is shown by samples of ancient DNA, analysed by an international team of research scientists under the leadership of Professor Eske Willerslev from Copenhagen University. Analyses of ancient DNA thereby ...
Malaysian authorities rescue 130 pangolins
Dec 20, 2009 |
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Malaysian wildlife authorities said they have rescued 130 pangolins and arrested two men attempting to smuggle the protected species, destined to be sold to restaurants and medicine shops.
DNA study sheds new light on horse evolution
Dec 10, 2009 |
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(PhysOrg.com) -- Ancient DNA retrieved from extinct horse species from around the world has challenged one of the textbook examples of evolution - the fossil record of the horse family Equidae over the past ...
Whiskers hold secrets of invasive minks
Dec 23, 2009 |
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Details of the lifestyle of mink, which escaped from fur farms and now live wild in the UK, have been revealed through analysis of their whiskers. Research led by the University of Exeter reveals more about the diet of this ...
