 Although Johannsen (1911) gave almost no attention to the dynamics of development, recall (from  section 2)  that he wanted the genotype to be seen as a whole and saw no value in the idea that “discrete particles of the chromosomes are ‘bearers’ of special parts of the whole inheritance in question” (1911: 131–2). Yet, Mendelian experiments seemed to show that the discrete-particles idea was justified. 