Very interesting link.Harold Gough wrote:Regrowth can go wrong:
This is called teratology and I once had a specimen with twin tarsi on one leg.
This specific example seems like a good example of teratology, but I don't see "regrowth" since those spare legs formed in a single go during pupal development. Or are you thinking about some underlying phenomenon that I've overlooked?
BTW, I had a chance yesterday to review a fascinating project involving chemical stimulation of regrowth and healing in stick insects and flatworms. This was in the senior division of our regional ISEF-affiliated science fair. The student did a really nice job -- he'll go far. (Sell your stock in ginseng; buy grape-seed extract.)