. The physical basis of heredity . Heredity. 32 PHYSICAL BASIS OF HEREDITY The case of Mirahilis, or of the Andalusian fowl, might be represented (Fig. 9) in the following scheme: \ Fia. 9.—Relation of Andalusian to splashed white and to black as shown by classes of Ft birds. Here all three types are fully separable, in which case either homozygote might be considered the dominant. Finally, to return to the case of the tall and short peas, the following scheme (Fig. 10) represents the Fj. Fia. 10.—Relation of tall to short peas as shown by F2 classes. group: Here the taU and the heterozygous g
. The physical basis of heredity . Heredity. 32 PHYSICAL BASIS OF HEREDITY The case of Mirahilis, or of the Andalusian fowl, might be represented (Fig. 9) in the following scheme: \ Fia. 9.—Relation of Andalusian to splashed white and to black as shown by classes of Ft birds. Here all three types are fully separable, in which case either homozygote might be considered the dominant. Finally, to return to the case of the tall and short peas, the following scheme (Fig. 10) represents the Fj. Fia. 10.—Relation of tall to short peas as shown by F2 classes. group: Here the taU and the heterozygous group are alike, and inseparable by ordinary inspection, even at the extreme end of their variation curves, and short is "completely" recessive. In cases in which the environment enters more obviously into the result (as in " abnormal abdomen,'' Fig. 5), the following scheme (Fig. 11) represents the relation:. 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 Morgan, Thomas Hunt, 1866-1945. Philadelphia : Lippincott
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