Knight — 36 — Dictionary 



Cytochrome. — An oxidisable pigment which is present in most 

 cells. 



Cytochylema. — Cell sap; the more fluid constituents of a 

 cell. 



Cytode. — A mass of protoplasm lacking a nucleus. 



Cytodiaeresis. — Mitosis; the process of nuclear division in 

 which daughter nuclei are formed each having a chromosome 

 complement similar to that of the original nucleus. For details 

 see under Mitosis. 



Cytogamy. — Conjugation, union, or fusion of cells. 



Cytogene. — See under Chromogene. 



Cytogenesis. — The formation, reproduction or development 

 of cells. Adj. Cytogenetic. 



Cytogenetic Map. — A map showing the actual positions of 

 the genes within the physical chromosome, as distinct from a 

 chromosome map which merely shows the position of the 

 genes relative to each other. 



Cytogenetics. — The interpretation of the phenomena of 

 heredity in terms of cell structures. 



Cytokinesis, — The division of the cytoplasm of a cell. 



Cytological Interference. — The effect whereby the forma- 

 tion of one chiasma lessens the probability of the occurrence 

 of another in its vicinity. 



Cytology. — The study of the structure, physiology, develop- 

 ment and reproduction of cells, 



Cytolymph. — Cell sap; the more fluid constituents of a cell. 



Cytolysin. — A substance which brings about cell dissolution. 



Cytolysis. — Cell dissolution, 



Cytomere. — (i) The cytoplasm of a sperm, (ii) Plastomere, 

 q.v. 



Cytomicrosome. — A microsome occurring in the cytoplasm. 



Cytomitome. — The cytoplasmic threadwork in contradistinc- 

 tion to the nuclear threadwork (Flemming; Wilson). 



Cytomorphosis. — A general term for the changes occurring 

 in cell substances during differentiation, development and 

 senescence of the cell. 



Cytoplasm. — The whole of the protoplasm of a cell excluding 

 the nucleus. Adj. Cytoplasmic. 



Cytoplasmic Inheritance. — The transmission of hereditary 

 characters by the cytoplasm as distinct from transmission by 

 genes situated at definite loci on the chromosomes. Also called 

 the "molecular" system of heredity. c\. Nuclear System and 

 Corpuscular System. 



