. Advanced biology. Biology; Physiology; Reproduction. If a black Andalusian cock is mated with a white Andalusian hen, the offspring is a hybrid showing a mottled blending of the black and white called blue. This is an example of incom- plete dominance. If a blue cock is mated with a blue hen, 25 per cent of the offspring will probably be black, 50 per cent may be blue, and 25 per cent may be white. Black pairs will breed only black; the white pairs will breed only white; but the offspring of a blue pair will segre- gate, sort out, into black, blue, and white. black, some were w^hite, and som
. Advanced biology. Biology; Physiology; Reproduction. If a black Andalusian cock is mated with a white Andalusian hen, the offspring is a hybrid showing a mottled blending of the black and white called blue. This is an example of incom- plete dominance. If a blue cock is mated with a blue hen, 25 per cent of the offspring will probably be black, 50 per cent may be blue, and 25 per cent may be white. Black pairs will breed only black; the white pairs will breed only white; but the offspring of a blue pair will segre- gate, sort out, into black, blue, and white. black, some were w^hite, and some blue. The blue chickens, then, of the F2 generation were hybrids. The inheritance of color in the Andalusian fowl is: (1) Pure black mated with pure black will always produce pure black. (2) Pure white mated with pure white will always produce pure white. (3) Pure black mated with pure white will always produce 100 per cent blue hybrids. (4) Blue hybrids, when mated with blue hybrids, tend to pro- duce 25 per cent black, 25 per cent white, and 50 per cent blue. The four-o'clock is another example of an organism in which a hybrid, produced by two distinct species, is unlike either, but is a blend of the two. The pure lines or types of four-o'clocks have. 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 Wheat, Frank Merrill; Fitzpatrick, Elizabeth T. New York ; Boston [etc. ] : American Book Company
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Keywords: ., bookcentury1900, bookdecade1920, booksubje, booksubjectphysiology
