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Biological Differences Chromosomal Sex Gonadal/Hormonal Sex Genital Sex.

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Presentation on theme: "Biological Differences Chromosomal Sex Gonadal/Hormonal Sex Genital Sex."— Presentation transcript:

1 Biological Differences Chromosomal Sex Gonadal/Hormonal Sex Genital Sex

2 KEY CONCEPTS Chromosomal Sex The Basics: 46 Chromosomes, Two Sex Chromosomes, X’s And Y’s Andosperm, Gynosperm, And “Predicting Sex” The Problematic X Chromosome Sex-Linked Traits Gonadal Sex The Indifferent Gonad Gonadal Development Mullerian Ducts--Ovaries and Wolffian Ducts—Testes Hormonal Sex The Adam Principle and the Eve Principle Testosterone (and MIS) and Estrogen Sex-Limited Characteristics

3 OvumSperm Each contributes 23 chromosomes for a total of 46 Always an X An X or a Y

4 X Chromosome Y Chromosome

5 XX - Female XY - Male

6 OvumSperm Each contributes 23 chromosomes for a total of 46 Always an X An X or a Y Y-AndospermX-Gynosperm

7 XX - Female XY - Male THE PROBLEMATIC X CHROMOSOME Pathological Sex-Linked Traits Hemophilia Hemophilia Color Blindness Muscular Dystrophy

8 KEY CONCEPTS Chromosomal Sex The Basics: 46 Chromosomes, Two Sex Chromosomes, X’s And Y’s Andosperm, Gynosperm, And “Predicting Sex” The Problematic X Chromosome Sex-Linked Traits Gonadal Sex The Indifferent Gonad Gonadal Development Mullerian Ducts--Ovaries and Wolffian Ducts—Testes Hormonal Sex The Adam Principle and the Eve Principle Testosterone (and MIS) and Estrogen Sex-Limited Characteristics

9 Gonads Wolffian Duct Müllerian Duct INDIFFERENT GONAD MALE GONAD FEMALE GONAD Adam Principle Eve Principle TestosteroneMISNothingHappens

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11 AGE Kind Of Sex MENWOMEN 6 weeks ChromosomalXYXX Gonadal Undifferentiated 7-12 weeks Gonadal TestesOvaries weeks Hormonal Estrogen, Testosterone, and Mullerian Inhibiting Substance Estrogen Genital Mullerian ducts degenerate (MIS). The Wolffian ducts differentiate into epididymis, vas deferens, and ejaculatory duct. Wolffian ducts degenerate (automatically). The Mullerian ducts differentiate into fallopian tubes, uterus, and upper vagina weeks Genital Penis and descended testes Outer vagina and clitoris Glans and Genital Tubercle become Glans (head of) penis Clitoris Urethral Fold becomes Shaft of the penisLabia minoria Urogenital Slit becomes Raphe (seam at base of penis) Vaginal orifice Labioscrotal Swelling becomes ScrotumLabia majora SEXUALDEVELOPMENTTIMETABLE BY GENDER

12 X/Y Chromosomes AndospermGynosperm Fertilization Timing Sex-Linked Traits Sex-Limited Traits Recessive X Hemophilia Color Blindness Indifferent Gonad TestosteroneEstrogen Adam and Eve Principles Mullerian Inhibiting Substance (MIS) Wolffian Duct System Mullerian Duct System Genital Tubercle Genital Groove Labioscrotal Swelling Sex Gonadal Sex Chromosomal Sex Hormonal Sex Genital Sex HermaphroditismTranssexualism Gender Identity Identity Salience Gender Roles StereotypeAndrogyny Masculine v. Feminine Sexuality Sexual Roles Sexual Orientation Gender Statistical Significance Substantive Significance Concepts/Terms You Should Know Today


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