A new theory in biology suggested an connection to the deadly venoms found in scorpions and the defensins, small proteins that ward of viruses and bacteria, in insects have a common ancestry. After studies were conducted, scientists discovered that a simple evolutionary genetic deletion event could change these defensins into deadly toxins.
Molecular Biology and Evolution (Oxford University Press). (2014, January 14). How scorpion gets its sting. ScienceDaily. Retrieved October 3, 2014 from www.sciencedaily.com/releases/2014/01/140114202909.htm
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