. The physical basis of heredity . Heredity. Fia. 102. a ^ b -Green leaf and checkered leaf of four-o'clock. (After Baur.) green branch the offspring is white like the maternal branch. These and other combinations show that this color inheritance is only through the mother. The results are explicable on the assumption that there are normal (green) chlorophyll bodies and abnormal ohlorophylless bodies, both kinds propagating in the cytoplasm by divi- sion, and that these two kinds are transmitted only through the egg-cell. The green or white color of the leaves of a given branch is an index of
. The physical basis of heredity . Heredity. Fia. 102. a ^ b -Green leaf and checkered leaf of four-o'clock. (After Baur.) green branch the offspring is white like the maternal branch. These and other combinations show that this color inheritance is only through the mother. The results are explicable on the assumption that there are normal (green) chlorophyll bodies and abnormal ohlorophylless bodies, both kinds propagating in the cytoplasm by divi- sion, and that these two kinds are transmitted only through the egg-cell. The green or white color of the leaves of a given branch is an index of the kind of chlorophyll body that the ovaries will probably contain. At each division of the body-cells the chlorophyll grains present in it are sorted out more or less at random—hence from a cell that. 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 Morgan, Thomas Hunt, 1866-1945. Philadelphia : Lippincott
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