"Spermatozoon" Quotes from Famous Books
 ... a minute cell with a transparent membrane, within which is the yolk containing the germinal vesicle. The spermatozoon penetrates into the ovule and becomes fused with it. The processes of development begin at once to occur. There is congestion of the uterine mucous membrane out of proportion to the rest of the uterus; the ovum finds lodging here, and becomes surrounded by a membrane which incloses it ...
— The Four Epochs of Woman's Life • Anna M. Galbraith
... one point of view they belong to the class of genetic variations, which depend upon the structure or constitution of the protoplasm; but instead of appearing in different zygotes (A zygote is a fertilised ovum, i.e. a new organism resulting from the fusion of an ovum and a spermatozoon.), they are present in the same zygote though at different times in its life-history. They are of the same order as the mutational variations of the modern biologist upon which the appearance of a new character depends. What is a genetic or mutational variation? It is a ...
— Darwin and Modern Science • A.C. Seward and Others |
