Genetically Changed Linkage Values in Pisum

HE new points of view upon the mechanism of heredity origina-T ting from the work of MORGAN and his co-workers have made it desirable to test on other material the validity of the theories for heredity founded upon the results obtained in the work with Drosophila. Of special interest is then to test the new theories on such a classical subject of Mendelian research as the pea plant. KAPPERT (1925, W 80 a) and WELLENSIEK (1925, W 164a) published a couple of years ago the results of researches concerning linkage in peas, which'were started with the explicit purpose to test the validity of the Drosophila-theories for Pisum. The investigations recorded below were carried on in the hope to contribute further to the same work.