As mutants tend to do, the homeotics teach us what happens normally, but with a special twist that drew me to devote my PhD years to them: the genes that control the sequential formation of body parts are themselves laid out in the exact sequence along the chromosome in which they are deployed as development proceeds.
This is development. Genes control the on and off of other genes. The dance provides the architecture of life. Development is awesome and beginning to be explainable.
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