. Body-build and its inheritance. Heredity; Human anatomy. THE BACK CROSS. 133. ^ TB Attention is called to the distribution of offspring in the Pal, Rid, Smi, and Wen families. In these families the children are of two extreme types; intermediates are absent. The result may be due merely to small numbers, but it suggests the presence of two sorts of gametes in the heterozygous parent and hence a tendency to segregation in the offspring. Hud Family. (Fig. 45.) The Father's (II 7) build is (45); very fleshy; his father's (I 1) was (28) and his mother's (46). Thus the Father is heter
. Body-build and its inheritance. Heredity; Human anatomy. THE BACK CROSS. 133. ^ TB Attention is called to the distribution of offspring in the Pal, Rid, Smi, and Wen families. In these families the children are of two extreme types; intermediates are absent. The result may be due merely to small numbers, but it suggests the presence of two sorts of gametes in the heterozygous parent and hence a tendency to segregation in the offspring. Hud Family. (Fig. 45.) The Father's (II 7) build is (45); very fleshy; his father's (I 1) was (28) and his mother's (46). Thus the Father is heterozygous. The Mother's (II 8) build is (40). Her father's build was (38), fleshy; and her mother's (35); medium fleshy. The Mother's 7 sibs have builds ranging between (35) and (46); principally fleshy to very fleshy. So this may be regarded as a back-cross of a heterozygous parent with a fleshy one of fleshy stock. Of the 4 children, 1 is medium-fleshy (III 11) with a build of (36), 1 is fleshy (III 10) (38), and two very fleshy; build (45); thus the build of the offspring is varied, but prevailing very fleshy. Jon-Hc Family. (Fig. 46.) A family of Welsh extraction living chiefly in New York State and Ohio. The Father (II 10), a farmer, suffered in middle age from "rupture," and died at 88 years from "old age," having the formula 150/62 inches; build (39). Of his 9 sibs: 1. Brother, died at 70 years from "dissipation," having the formula 175 inches; build (36). 2. Brother, who died at 53 years from "inflamma- tion of kidneys and dyspepsia," had the formula 125/63 inches; build (31). 3. Sister, who died at 68 years from Bright's dis- ease, 140/57 inches; build (43). 4. Sister, who died at 74 years from "flux," 150/58 inches; build (44). 5. Sister, who died at 75 years from Bright's dis- ease, 120/59 inches; build (34). 6. Sister, who died at 60 years from Bright's dis-
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecthumanan, bookyear1923
