By studying a gene family important for toxin production, researchers found that modern rattlesnakes have pared down their venom arsenal over time (SN: 10/15/16, p. 9). Rattlers now have a smaller repertoire of toxins, perhaps more specialized to their prey.



T.H. Saey. Molecular evolution. Science News. Vol. 175, January 31, 2009, p. 26.
L. Sanders. Venom hunters. Science News. Vol. 176, August 15, 2009, p. 16.
The Giraffe Genome Project


T.H. Saey. New light on moths gone soot-colored. Science News. Vol. 179, May 7, 2011, p. 11.




Further Reading




S. Milius. Organisms age in myria...ome might not even bother. Science News. Vol. 190, July 23, 2016, p. 26.
Venom repertoire
Scientists filled in the details of some famous evolutionary tales in 2016?—?and discovered a few surprises about creatures large and small.
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