The Yuck Factor
Imagine an ape that laughs like Phyllis Diller. Imagine a sheep with human arms growing from its body, a fantasy – for now -- on the edge of stem cell research.
Such creatures are called chimeras, a word derived from the monstrous beast of Greek mythology -- part lion, part serpent and part goat.
Author Jamie Shreeve wrote about the 2005 versions of chime…
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