News tagged with reproduction
Biologists discover how yeast cells reverse aging
Human cells have a finite lifespan: They can only divide a certain number of times before they die. However, that lifespan is reset when reproductive cells are formed, which is why the children of a 20-year-old ...
Jun 24, 2011 |
5 / 5 (29) |
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Darwinian selection continues to influence human evolution
New evidence proves humans are continuing to evolve and that significant natural and sexual selection is still taking place in our species in the modern world.
Apr 30, 2012 |
4.3 / 5 (22) |
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Sex and space? Houston, we have a problem
Ever dream about a honeymoon in space? You may want to think twice after you hear about Joe Tash's research.
Space & Earth / Space Exploration
Jan 06, 2011 |
4.4 / 5 (16) |
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Evolution at warp speed: Hatcheries change salmon genetics after a single generation
The impact of hatcheries on salmon is so profound that in just one generation traits are selected that allow fish to survive and prosper in the hatchery environment, at the cost of their ability to thrive ...
Dec 19, 2011 |
4.4 / 5 (14) |
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Egg-laying beginning of the end for dinosaurs
Their reproductive strategy spelled the beginning of the end: The fact that dinosaurs laid eggs put them at a considerable disadvantage compared to viviparous mammals. Together with colleagues from the Zoological ...
Other Sciences / Archaeology & Fossils
Apr 17, 2012 |
4.7 / 5 (12) |
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Sexual healing? Not likely
(PhysOrg.com) -- A new study shows the production of sperm is more biologically taxing than previously thought, and expending energy on it has significant health implications.
Jan 30, 2012 |
4.6 / 5 (11) |
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Sexual reproduction works thanks to ever-evolving host, parasite relationships: study
(PhysOrg.com) -- It seems we may have parasites to thank for the existence of sex as we know it. Indiana University biologists have found that, although sexual reproduction between two individuals is costly ...
Jul 07, 2011 |
4.8 / 5 (8) |
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Review: New iPad screen is eye-opening upgrade
(AP) -- Beware the new iPad, not because it's an inferior product, but because it's a superior one. Using one is like living the life of a millionaire for a day, then getting dumped back in your regular life. Your eyes are ...
Electronics / Consumer & Gadgets
Mar 21, 2012 |
2.9 / 5 (10) |
4
Newborn dinosaur discovered in Maryland
No, this isn't Jurassic Park. Researchers at the Johns Hopkins University School of Medicine with help from an amateur fossil hunter in College Park, Md., have described the fossil of an armored dinosaur hatchling. It is ...
Other Sciences / Archaeology & Fossils
Sep 14, 2011 |
5 / 5 (5) |
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Loch fossils show life harnessed sun and sex early on
Remote lochs along the west coast of Scotland are turning up new evidence about the origins of life on land.
Other Sciences / Archaeology & Fossils
Apr 13, 2011 |
4.8 / 5 (5) |
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Plants cloned as seeds
Plants have for the first time been cloned as seeds. The research by aUC Davis plant scientists and their international collaborators, published Feb. 18 in the journal Science, is a major step towards making hybrid crop p ...
Feb 17, 2011 |
4.6 / 5 (5) |
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Scientists call for 'swifter and sounder' testing of chemicals
Scientific societies representing 40,000 researchers and clinicians are asking that federal regulators tap a broader range of expertise when evaluating the risks of chemicals to which Americans are being increasingly exposed.
Mar 03, 2011 |
5 / 5 (4) |
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Researcher argues that sex reduces genetic variation
Biology textbooks maintain that the main function of sex is to promote genetic diversity. But Henry Heng, Ph.D., associate professor in WSU's Center for Molecular Medicine and Genetics, says that's not the case.
Jul 07, 2011 |
5 / 5 (4) |
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How unrelated wasps succeed by helping others breed
(PhysOrg.com) -- Why do some animals help to rear the young of an unrelated individual without any apparent benefit to themselves?
Aug 12, 2011 |
5 / 5 (4) |
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Sexual reproduction brings long-term benefits, study shows
Courtship rituals can be all-consuming, demanding time and effort – but now scientists have discovered why it might be worth it.
Apr 09, 2012 |
3.3 / 5 (6) |
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Reproduction
Reproduction is the biological process by which new individual organisms are produced. Reproduction is a fundamental feature of all known life; each individual organism exists as the result of reproduction. The known methods of reproduction are broadly grouped into two main types: sexual and asexual.
In asexual reproduction, an individual can reproduce without involvement with another individual of that species. The division of a bacterial cell into two daughter cells is an example of asexual reproduction. Asexual reproduction is not, however, limited to single-celled organisms. Most plants have the ability to reproduce asexually.
Sexual reproduction requires the involvement of two individuals, typically one of each sex. Normal human reproduction is a common example of sexual reproduction.
For more information about Reproduction, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
