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| Sex Characteristics Sex Differences | Sex Dimorphism | Characteristic, Sex | Characteristics, Sex | Difference, Sex | Differences, Sex | Dimorphism, Sex | Dimorphisms, Sex | Sex Characteristic | Sex Difference | Sex Dimorphisms Those characteristics that distinguish one sex from the other. The primary sex characteristics are the ovaries and testes and their related hormones. Secondary sex characteristics are those which are masculine or feminine but not directly related to reproduction. | |
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