. The genetic and the operative evidence relating to secondary sexual characters. Sex (Biology); Heredity; Poultry. T. H. MORGAN PLATE 1. JULIUS BIEN, 1. Black Breasted Game Bantam male. 3. Sebright male. 2 Female. 4. Castrated Sebright 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. Washington, Carnegie institution of Washington

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectpoultry, bookyear1919