1918, Massachusetts Agricultural Experiment Station, Annual Report, №s 30–39, page #102:Non-broodiness, therefore, is a comprehensive term employed to describe the phænotypic condition resulting from several sorts of genetic differences.
1937, Zoological Society of London, Proceedings, volume 107, part 2, page #563:Among these Zulu Zebras there are some phænotypicburchelli with totally unstriped limbs, but the majority is of the narrow and somewhat irregularly banded wahlbergi-type with at least a few stripes on the knees and hocks.
