Note 137 — THE INDIVIDUAL ORGANISM WITH REGARD TO FORM AND METABOLISM (continued 4)

Boveri (Ergebn. üb. d. Konstitution etc. des Zellkerns, Jena, 1904; and “Zellen-Studien VI.” Jen. Zeitschr. 43, 1907) has made it highly probable by experiments that the different chromosomes of the nucleus of the sexual products play a different part in morphogenesis, though not in the sense of different single representatives of different single organs. This doctrine, of course, would not alter the whole problem very much: the chromosomes would only be means of morphogenesis and nothing else, no matter whether they were of equal or of different formative value. It only is with regard to the problem of the determination of sex (see page 107, note 46), that the morphogenetic singularity of one certain specific chromosome can be said to be proved.