How did human paired limbs evolve? MBL Whitman Center study targets role of gill arch in fish

(Marine Biological Laboratory) Genetic evidence is presented for the theory that the paired limbs of humans, and before that the paired fins of fish, evolved from the transformation of gill arches in early fish, in a study by J. Andrew Gillis of the University of Cambridge, U.K., and the Whitman Center at the Marine Biological Laboratory in Woods Hole, Mass.