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. Body-build and its inheritance. Heredity; Human anatomy. SEGREGATION IN 1IEREDIT1 . 35. Where the mode is at 33 it is probable that an Sand an M gan have met; and this condition is relatively common just Iâ¢â¢ â M gametes are common. The mode at 35 may arise from an 1 gan carried in a heterozygous M uniting with an S gamete. The - carried in heterozygous M may be responsible for a probable ra which is hidden in the form of a hump at 28 in figure 52. Attention is called to the probable influence of these modes on the two modes shown in figure 7, at 33 and 35 respectively. These two modes are
. Body-build and its inheritance. Heredity; Human anatomy. SEGREGATION IN 1IEREDIT1 . 35. Where the mode is at 33 it is probable that an Sand an M gan have met; and this condition is relatively common just Iâ¢â¢ â M gametes are common. The mode at 35 may arise from an 1 gan carried in a heterozygous M uniting with an S gamete. The - carried in heterozygous M may be responsible for a probable ra which is hidden in the form of a hump at 28 in figure 52. Attention is called to the probable influence of these modes on the two modes shown in figure 7, at 33 and 35 respectively. These two modes are strong evidence for a segregation in the factors for build. Thus the very irregularity of the polygon of figure 7 is evidence of He- presence of segregating factors for build. Moreover, these two mi appear at every age from birth to maturity, as is clearly shown in figure 53. This bimodality is easily accounted for on genetics] grounds, but is inexplicable upon the bare nutritional hypothesis of build. On the Number of Factors Involved in Fleshy Build. It is by no means an easy matter to determine the number of inde- pendent factors which are active in the case of a trait that is due to multiple factors. This matter is still less easy if there is only very imperfect dominance approaching intermediacy of the trail in tie- progeny of the Fi mating. Yet that is the situation that has to be met in the study of heredity of build. An attempt has been made in this paper to test the relative prob- ability that there are only two, on the one hand, or three or more. Fio. 51.âPolygon of distribution of offspring of M X F n i UbU XI), sexes separate and combined. See also '> A t I â. 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 Davenport, Charles Benedict, 1866-1944. Washington, Carnegie Institution of W
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecthumanan, bookyear1923