The Journal of experimental zoology . 186189188195192195 ±±************** 139139131122118120111102105101948786715749 ± * cent less than those of the males in the earUer generations, asthe position of graph B indicates. A comparison of graph B with graph C in figure 7 shows thatthe body-weight increase with age in the males of the later gener-ations of the inbred strain was, on the whole, very similar to thatin the males of the series of stock Albinos r
The Journal of experimental zoology . 186189188195192195 ±±************** 139139131122118120111102105101948786715749 ± * cent less than those of the males in the earUer generations, asthe position of graph B indicates. A comparison of graph B with graph C in figure 7 shows thatthe body-weight increase with age in the males of the later gener-ations of the inbred strain was, on the whole, very similar to thatin the males of the series of stock Albinos reared in 1913 to 1915as controls for the inbred strain: stock males grew somewhat EFFECTS OF INBREEDING ON BODY WEIGHT 89 more vigorously during the adolescent period, but they werenot as heavy as the inbred males in adult life. Since the inbredmales were fully as large as the males in the stock series that hadbeen reared under much more favorable conditions of environ-ment and of nutrition, it is evident that continued inbreeding. Fig. 7 Graphs showing the increase in the weight of the body with age formales belonging to four series. A, graph for males of the seventh to the fifteenthgenerations of the inbred strain (series A, B); B, graph for males of the sixteenthto the twenty-fifth generations of the inbred strain (series A, B); C, graph formales of the selected series of stock Albinos reared in 1913 to 1915 as controlsfor the inbred strain; D, graph for males of the stock series reared simultaneouslywith the individuals of the twenty-first to the twenty-fifth generations of theinbred strain (data in table 10 and in table 11 of the present paper and in table13 of Studies on inbreeding I; King, 18). has not produced a deterioration in the original stock as regardsthe normal weight increase with age. The males in the seventhto the fifteenth generations of the inbred strain were much su-perior in body weight to outbred stock males reared under simi-lar environmental and nutr
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1919
