PLASTICITY AND SPECIATION. “By the plasticity hypothesis, divergence, in the form of alternative phenotypes, life-stage differences, and contrasting traits such as those expressed under extreme or novel conditions, arises first; then particular variants are fixed in particular subpopulations due to assortative mating, environmentally mediated change in expression, or selection. … Extreme plasticity such as learning can produce exceedingly rapid (abrupt) speciation.” https://lnkd.in/eS_4y_J View in LinkedIn