chapter  2
13 Pages

Carl Correns and the early history of genetic linkage


In a couple of recent papers (Rheinberger 2000a,b), I have attempted to reconstruct the experimental pathway that led Carl Correns to restate the Mendelian segregation ratios in 1900 and, after a few years of hesitation, to fully endorse the principle of the discreteness and the free recombinability of genetic factors during the process of fertilization. To be more precise, we have to distinguish two aspects of the problem: the first is the complete separation of paired factors from each other, in contrast to their blending; the second is the independent assortment of the different pairs themselves, the alternative being the coupling of characters.