. Bulletin of the Philosophical Society. Philosophical Society (University of Virginia). Scientific Section; Science; Philosophy. STUDIES IN HUMAN HEREDITY 309 factor, supposing the first-generation male to be heterozygous dominant and the female homozj^gous recessive.*. ', cy Fig. 37 Pulmonart Tuberculosis. Case, figure 37, gives a two-generation tuberculosis history, and also indicates that the tuberculosis factor is recessive to the normal condition. -D Fig. 38 Pulmonary Tuberculosis. Case, figure 38, again gives a three-generation history and the same evi- dence with respect to the r
. Bulletin of the Philosophical Society. Philosophical Society (University of Virginia). Scientific Section; Science; Philosophy. STUDIES IN HUMAN HEREDITY 309 factor, supposing the first-generation male to be heterozygous dominant and the female homozj^gous recessive.*. ', cy Fig. 37 Pulmonart Tuberculosis. Case, figure 37, gives a two-generation tuberculosis history, and also indicates that the tuberculosis factor is recessive to the normal condition. -D Fig. 38 Pulmonary Tuberculosis. Case, figure 38, again gives a three-generation history and the same evi- dence with respect to the recessiveness of the pathologic condition. Case, figure 39, gives a fairly complete four-generation history. Judg- ing from the progeny we are undoubtedly justified in regarding the mother, C—the cause of whose death is unknown—as also tubercular (pure reces- sive?). No information could be secured about fraternity A; fraternity B, with one exception, was said to be "living and ; Two individuals of this fraternity have had a child each die of tuberculosis. Contrary to the opinion frequently heard, no evidence appears among these few cases that the male parent is hereditarily prepotent over the female in the matter of transmitting tubercular diathesis. * Explanation of symbols of pedigree charts: d, died at the age indicated; s, sick for the time indicated; c, cured for the time indicated; , died in 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 Philosophical Society (University of Virginia). Scientific Section; University of Virginia. Charlottesville, Va. : University of Virginia
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