4. Sex & Gender 2010 AB

4. Sex & Gender 2010 AB - Sex vs Gender Sex vs...

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Sex vs. Gender
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Sex vs. Gender Sex : either of the two major forms of individuals that occur in many species and that are distinguished respectively as female or male - based on type of gonad/gamete produced BIOLOGICAL Gender : the behavioral, cultural, or psychological traits typically associated with one sex SOCIAL Merriam-Webster online
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What gender is this keyboard? Sex
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Sex Types ? • Genotype • Brain • Gonadal Type • Internal Ducts • External Genitalia • Phenotypic Sex • Legal Sex
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Blue Headed Wrasse
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What is the sex of this person? • Genotype: XY • Brain: no androgen • Gonadal Type: infertile male • Internal Ducts: none • External Genitalia: female • Phenotypic Sex: female • Legal Sex: choice! Androgen Insensitivity Syndrome
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Evolution of Gender Evolution of Gender • Anisogamy gives rise to different mating types Anisogamy gives rise to different mating types – (+ / -) (female/male) (+ / -) (female/male) • Recognition of opposite type has advantages Recognition of opposite type has advantages – chemical (pheromones) chemical (pheromones) – visual signals visual signals • secondary sex characters secondary sex characters – coloration, horns, behavioral display coloration, horns, behavioral display
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Bird Courtship: Visual http://www.youtube.com/watch?v=SB8Uod V_DJg http://www.youtube.com/watch?v=k- 0pl5Kp7UQ
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Round Goby Males • Sneaker males • Look like females • Produce more sperm • Can be more successful
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Gender or Sex Symbols?
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Gender?
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Is Gender Learned? •Gender identity developed by age 3 •Gender constancy by 5 years •But what determines gender? Adults and children treat
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4. Sex & Gender 2010 AB - Sex vs Gender Sex vs...

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