Heredity in relation to eugenics / by Charles Benedict Davenport.
- Charles Benedict Davenport
- Date:
- [1911]
Licence: In copyright
Credit: Heredity in relation to eugenics / by Charles Benedict Davenport. Source: Wellcome Collection.
Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.
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![ternity derived from two such mulattoes having 45 per cent and 13 per cent respectively of black in the skin, the proportion of black in the 7 offspring whose color was measured ranged from 46 to 6 (Fig. 13). The hghter Umit was as hght as most Caucasian skins. In another fraternity whose parents had 29 per cent and 13 per cent of black respectively, the children ranged from 28 per cent to 8.5 per cent of black in the skin color. ^ Here, again, the light- W. Family ^(white) = 9 (negro) $ (mulatto) = 9 (mulatto) $ (mulatto; = 9 (mulatto; color $ (mulatto) = 9(mulatto) color of I of 12-jear old grand- | eon) I daughter) I $ (mulatto ; = 9 (mulatto, very dark; 13-17-35-35)I 45-12-33-10) 19yrs. 17 yrs. 15 yrs. 13 yrs. ]2yrs. 10 yrs. 8 yrs. 7 yrs. 5 yrs. absent; color of N 25 32 46 31 6 23 33 color of father Y 20 14 7 15 4 17 16 12-year absent R 30 37 40 30 30 35 28 old sis- W25 17 7 24 60 25 33 ter Fig. 13.—Pedigree chart of W family of mulattoes, showing the percent- ages of the four colors; black (A^), yellow (F), red (jB) and white (IF) that combined (as in the color wheel) will give the skin color, cf, male; 9, female. For fuller details see Davenport, G. C, and C. B., 1910. est child has practically a white skin. In the case of the two other famiUes, in which the parents were dark mulat- toes (30 to 40 per cent black) none of the children were hghter than 27 per cent black. The germ cells of the parents probably lack the lower grades of pigmentation. On the other hand two very hght colored parents will have (probably) only light children, some of whom pass for whites away from home. So far as skin color goes they are as truly white as their greatgrandparent and it is quite 1 All colors were determined by means of the Bradley color top.](https://iiif.wellcomecollection.org/image/b21462719_0057.jp2/full/800%2C/0/default.jpg)
