1. Sutton, W.S. (1902) Morphology of the chromosome group in Brachystola magna. Biol. Bull. 4, 24. See also McKusick, V.A. (1960) Walter S. Sutton and the physical basis of mendelism. Bull. Hist. Med. 34, 487–497; and Martins, L.A-C.P. (1999) Did Sutton and Boveri propose the so-called Sutton–Boveri chromosome hypothesis? Genet. Mol. Biol. 22, 261–271
2. On the maiotic phase (reduction divisions) in animals and plants;Farmer;Q. J. Microsc. Sci.,1905
3. Baxter, A. and Farley, J. (1979) Mendel and meiosis. J. Hist. Biol. 12, 137–173, p. 139
4. For an illustration of this viewpoint, see Bourne, G.C. (1894) Epigenesis or evolution. Sci. Prog. 1, 105–126
5. Olby, R. (1987) William Bateson's introduction of mendelism to England: a reassessment. Br. J. Hist. Sci. 20, 399–420; Richmond, M.L. Women in the early history of genetics: William Bateson's school of genetics at Cambridge University, 1900–1910. Isis (in press)