Biology (Gr. bios, life; logos, discourse), the study of life and of living things.
Biometry (Gr. bios, life; metron, measure), the study of biological problems by means of statistical methods.
Blastomere (Gr. blastos, germ; meros, part), one of the early cells formed by the division of the ovum.
Blastophthoria (Gr. blastos, germ; phtheiro, destroy), deterioration of the germ as the result of direct pathogenic or other disturbing agents.
Blending Inheritance, inheritance in which the characters of the parents seem to blend in the offspring.
Cacogenic (Gr. kakos, bad; genesis, origin), pertaining to genetically undesirable human strains.
Cell, the fundamental unit of structure in plants and animals.
Centrosome (Gr. kentron, center; soma, body), a small body which functions in indirect cell-division.
Character, any distinguishing feature, trait or property of an organism.
Chemotropism (chemical and tropism), defined, [p. 198].