between 1902 and 1910. The results both supported and extended Mendel's laws of heredity. Hilda Blanche Killby, who had finished her studies with the Newnham College Mendelians in 1901, aided Bateson in the replication of Mendel's crosses in peas. She conducted independent breeding experiments in rabbits and bantam fowl, as well.

In 1910, Bateson became director of the John Innes Horticultural Institution and moved with his family to Merton Park in Surrey. During his time at the John Innes Horticultural