. Genetics in relation to agriculture. Livestock; Heredity; Variation (Biology); Plant breeding. Fig. 40.—Results of crossing smooth IJack and rough white guinea-pigs. Fi is rough black. F2 is in the ratio 9 rough black : 3 rough white : 3 smooth black : 1 smooth white. {After Baur.) tively. The Fi RrCc is rough black because of the dominance of these two characters over their allelomorphs. When Fi individuals are bred together the Fi segregates in accordance with normal dihybrid expecta- tions as shown in the checkerboard in Fig. 41. This experiment shows how easily new races may be establish

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. Genetics in relation to agriculture. Livestock; Heredity; Variation (Biology); Plant breeding. Fig. 40.—Results of crossing smooth IJack and rough white guinea-pigs. Fi is rough black. F2 is in the ratio 9 rough black : 3 rough white : 3 smooth black : 1 smooth white. {After Baur.) tively. The Fi RrCc is rough black because of the dominance of these two characters over their allelomorphs. When Fi individuals are bred together the Fi segregates in accordance with normal dihybrid expecta- tions as shown in the checkerboard in Fig. 41. This experiment shows how easily new races may be established, for in ^2 two entirely new combinations of characters were obtained, namely, rough black and smooth white. Of the rough black individuals only Digitized by Microsoft®. 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 Babcock, E. B. (Ernest Brown), b. 1877; Clausen, Roy Elwood, 1891-. New York, McGraw-Hill; [etc. , etc. ]

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