Japanese scientists create 581 clones from the same mouse

Scientists clone 581 mice from one mouse.

Japanese scientists have taken cloning to a whole new level. They have managed to push the technique to new limits by cloning 581 mice – all from a single original cell. If their results can be replicated in other animals it could provide a way for virtually unlimited supplies of genetically superior farm animals or other animals important to research.

 

 

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Study Finds Newborn Mice’s Hearts Can Heal Themselves

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Researchers worked with mice and found that if a portion of the heart was removed within the first week of life, the heart grew back completely.

An adult zebra fish can regenerate a damaged heart with no scar formation. This remarkable phenomenon has been seen in other fish and amphibians as well, but never before in a mammal.

 

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Length of Pregnancy Influenced by Placenta Structure

Some humans  placentas do not form the complex structure seen in animals

The nine-month pregnancy in humans is influenced by the structure of the placenta, according to new research into the evolution of reproduction in mammals which ends a 100-year mystery.

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Over 200 New Species Discovered in Papua New Guinea

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This Pink-Eyed Katydid is one of many new species discovered.

This pink-eyed katydid lives in the forest canopy in Papua New Guinea. It is one of the over 200 new species discovered by the Conservation International expedition to the Muller Range mountains last year. See more of the new species of frogs, ants, spiders, mammals, and plants, and videos of the expedition at Conservation International.

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Dogs Likely Originated in the Middle East, New Genetic Data Indicate

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Dog breeds and gray wolfs come from same evolutionary tree.

Dogs likely originated in the Middle East, not Asia or Europe, according to a new genetic analysis by an international team of scientists led by UCLA biologists.

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Small Dogs Originated in the Middle East, Genetic Study Finds

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Yorkshire terrier.

A genetic study has found that small domestic dogs probably originated in the Middle East more than 12,000 years ago. Researchers writing in the open access journal BMC Biology traced the evolutionary history of the IGF1 gene, finding that the version of the gene that is a major determinant of small size probably originated as a result of the domestication of the Middle Eastern gray wolf.

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