Chromatin (Gr. chroma, color), deeply staining substance of the cell-nucleus.
Chromosomes (Gr. chroma, color; soma, body), characteristic deeply staining bodies, typically constant in number and appearance in each species of animal or plant, which appear in the cell during indirect division.
Chromotropism (Gr. chroma, color; tropē, turning), defined, [p. 198].
Cleavage, the division of the egg-cell into many cells.
Congenital (L. con, together; gigno, bear), present at birth.
Conjugation (L. con, together; jugum, yolk), the union of germ-cells or unicellular individuals for reproduction.
Constructive (or positive) Eugenics, a system of securing a superior race through propagation of the fittest individuals.
Cortex (L. cortex, bark), the outer or investing layer of the brain.
Cytoplasm (Gr. kytos, cell; plasso, form), the protoplasm of the cell outside of the nucleus.