. Heredity and selection in sociology. Sociology; Heredity; Natural selection. 20 HEREDITY AND SELECTION IN SOCIOLOGY nucleus is again halved, two additional chromosomes being ejected, and forming the second polar body (E). MeanwhUe the first polar body divides into two, each with two chromosomes. Thus there are eventually four nuclei produced from the original. 2nd Div. Fig. 2.—MATrEATiON of Ovum oe Egg-Cell (after Wbismann). {By permission of Mr. Edward Arnold.) A, The primitive germ-ceU (cAr = chromosomes). B, the ovocyte, with doubled chromosomes. C, first karyokinesis. D, immediately afte
. Heredity and selection in sociology. Sociology; Heredity; Natural selection. 20 HEREDITY AND SELECTION IN SOCIOLOGY nucleus is again halved, two additional chromosomes being ejected, and forming the second polar body (E). MeanwhUe the first polar body divides into two, each with two chromosomes. Thus there are eventually four nuclei produced from the original. 2nd Div. Fig. 2.—MATrEATiON of Ovum oe Egg-Cell (after Wbismann). {By permission of Mr. Edward Arnold.) A, The primitive germ-ceU (cAr = chromosomes). B, the ovocyte, with doubled chromosomes. C, first karyokinesis. D, immediately afterwards, half the chromosomes (4) in the first polar body {pg). E, second karyokinesis, first polar body [pg) divided, nucleus effecting new division. E, the mature ovum, with two chromo- somes ; three polar bodies outside the cell. ovocyte—namely, three polar bodies and the reduced nucleus of the ovum—and each of the four nuclei has two chromosomes —half the normal number. The chief interest of this complicated maturation process. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Chatterton-Hill, Georges, 1883-. London : A. & C. Black
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