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Three nesting behaviour patterns are documented in the plethodontid salamander Hemidactylium scutatum. A female may lay eggs (1) in a solitary nest and brood them, (2) in a joint nest and brood them(More)
SCIENCE sciencemag.org P H O T O : D A N IE L K N IG H T O N / G E T T Y I M A G E S E ight percent of the human genome originated in virus genomes, including genes now essential to human life. This(More)
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