1. Aranda-Anzaldo A., The Hox-gene research programme and the shortcomings of molecular preformationism,Riv. Biol./Biol. Forum 93 (2000), 57–82.
2. Baldwin J.M., A new factor in evolution,Am. Nat. 30 (1896), 441–541.
3. Chapman L.J., Galls F., Shinn J., Phenotypic plasticity and the possible role of genetic assimilation: Hypoxia-induced trade-offs in the morphological traits of an African cichlid, Ecol. Lett. 3 (2000), 387–393.
4. Cubas P., Vincent C., Coen E., An epigenetic mutation responsible for natural variation in floral simmetry, Nature 401 (1999), 157–161.
5. Cullis C.A., Control of variation in higher plants, in: “Evolutionary processes and metaphors”, M.W. Ho and S.W. Fox eds., J. Wiley, New York 1988.