blastomeres
71Segmentation nucleus — Segmentation Seg men*ta tion, n. The act or process of dividing into segments; specifically (Biol.), a self division into segments as a result of growth; cell cleavage; cell multiplication; endogenous cell formation. [1913 Webster] {Segmentation… …
72Segmentation of the ovum — Segmentation Seg men*ta tion, n. The act or process of dividing into segments; specifically (Biol.), a self division into segments as a result of growth; cell cleavage; cell multiplication; endogenous cell formation. [1913 Webster] {Segmentation… …
73Segmentation sphere — Segmentation Seg men*ta tion, n. The act or process of dividing into segments; specifically (Biol.), a self division into segments as a result of growth; cell cleavage; cell multiplication; endogenous cell formation. [1913 Webster] {Segmentation… …
74segmentation sphere — Morula Mor u*la, n.; pl. {Morul[ae]}. [NL., dim. of L. morum a mulberry.] (Biol.) The sphere or globular mass of cells (blastomeres), formed by the clevage of the ovum or egg in the first stages of its development; called also {mulberry mass},… …
75cleavage — noun Date: 1816 1. a. the quality of a crystallized substance or rock of splitting along definite planes; also the occurrence of such splitting b. a fragment (as of a diamond) obtained by splitting 2. the action of cleaving …
76holoblastic — adjective Etymology: International Scientific Vocabulary Date: 1872 characterized by complete cleavage that divides the whole egg into distinct and separate blastomeres compare meroblastic …
77morula — noun (plural morulae) Etymology: New Latin, from Latin morum mulberry, from Greek moron Date: 1874 a globular solid mass of blastomeres formed by cleavage of a zygote that typically precedes the blastula • morular adjective • morulation noun …
78radial cleavage — noun Date: 1973 holoblastic cleavage that is typical of deuterostomes and that is characterized by arrangement of the blastomeres of each upper tier directly over those of the next lower tier resulting in radial symmetry around the pole to pole… …
79vegetal — adjective Etymology: Medieval Latin vegetare to grow Date: 15th century 1. vegetable 2. vegetative 3. of or relating to the vegetal pole of an egg or to that part of an egg from which the endoderm normally develops < vegetal blastomeres > …
80Thomas Hunt Morgan — Infobox Scientist name = Thomas Hunt Morgan box width = image size =200px caption =Johns Hopkins yearbook of 1891 birth date = Birth date|1866|9|25 birth place = Lexington, Kentucky death date = Death date and age|1945|12|4|1866|9|25 death place …
