In _The Haunted Bookshop and Other Apparitions_, Brian Stableford makes this statement about evolution and chimeras: “What’s an insect, after all, but a serial chimera? The genetic blueprint for making larvae must have been separate, once upon a time, from that for making a fly or a beetle. How did they come together to form an organism that could exploit the best features of both designs as the seasons changed? The adaptive radiation of all the major invertebrate groups must have involved chimerization as well as natural selection” (Stableford, 2007, p. 32). Stableford has raised some thoughtful questions about the improbability of evolutionary mechanisms. Clearly, they aren’t enough to explain the metamorphoses of insects or the sprinkling of homologous traits and morphological similarities across phylums.
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