. Heredity in relation to evolution and animal breeding, . Heredity. THE DUALITY OF INHEKITANCE material, so far as heredity is concerned, is evidently found in egg and sperm alike. It is plainly small in amount and possiblj^ con- sists merely in ferment-like bodies which ini-. FiG. 1.—Egg and sperm (s) of the sea-urchin, Toxopneustes, both shown at the same enlargement. (After Wilson.) tiate certain metabolic processes in a suitable medium represented by the bulk of the egg. The amount of a ferment used in starting a chemical change bears no relation, as is well known, to the amount of the ch
. Heredity in relation to evolution and animal breeding, . Heredity. THE DUALITY OF INHEKITANCE material, so far as heredity is concerned, is evidently found in egg and sperm alike. It is plainly small in amount and possiblj^ con- sists merely in ferment-like bodies which ini-. FiG. 1.—Egg and sperm (s) of the sea-urchin, Toxopneustes, both shown at the same enlargement. (After Wilson.) tiate certain metabolic processes in a suitable medium represented by the bulk of the egg. The amount of a ferment used in starting a chemical change bears no relation, as is well known, to the amount of the chemical change which it can bring about in a suitable medium. 9. 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 Castle, William E. (William Ernest), 1867-1962. New York ; London : D. Appleton and Company
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