Dramatic scenes are played out under Ralf Sommer's microscope: his research object, the roundworm Pristionchus pacificus, bites another worm, tears open a hole in its side and devours the oozing contents. The squirming victim ...
Plants & Animals
Jul 1, 2010
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Reptiles are in trouble: In fact, over 21% of reptile species are threatened with extinction worldwide, according to a first-of-its-kind global assessment of more than 10,000 species.
Plants & Animals
May 1, 2022
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The nectar of the almond tree produces an extraordinary and dangerous poison. This is the only known plant to have this poison in its flowers' nectar. A study carried out at the University of Haifa has revealed that bees ...
Plants & Animals
Jan 28, 2010
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Researchers comparing the fetal development of the eye of the owl monkey with that of the capuchin monkey have found that only a minor difference in the timing of cell proliferation can explain the multiple anatomical differences ...
Evolution
May 18, 2009
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(PhysOrg.com) -- The astonishing similarity in the appearance of embryos from different animal species was observed as far back as the 19th century by scientists such as Karl von Baer, Charles Darwin and Ernst Haeckel. Such ...
Cell & Microbiology
Dec 15, 2010
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The turtle has always been considered somewhat odd in evolutionary terms. In addition to lacking the hole in the skull—the temporal fenestra—that is characteristic of the egg-laying amniotes, the structure of its shell ...
Ecology
Jun 28, 2013
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Double flowers—though beautiful—are mutants. The genetic interruption that causes that mutation previously helped scientists pinpoint the genes for normal development of flower sexual organs in Arabidopsis thaliana. Now ...
Evolution
Sep 4, 2012
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A popular view among evolutionary biologists that fundamental genes do not acquire new functions was challenged this week by a new study in the Proceedings of the National Academy of Sciences.
Evolution
May 11, 2009
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What separates humans from Chimpanzees? Is it the genetics of our population, or our different structures and behavior capabilities? To Professor Wallace Arthur it is all of these points, which is why his latest book Evolution: ...
Evolution
Jan 27, 2011
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(Phys.org)—An international team of researchers has conducted a broad scale phylogeny of orchids for the first time and in so doing have uncovered many of the reasons for their broad diversity. In their paper published ...
