day 1 Sex and Gender .docx

day 1 Sex and Gender .docx - Sex and Gender from a...

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Sex and Gender from a Biological Perspective - Sex Anatomical & physiological characteristics used to define male/female - Sexuality Attitudes and values related to sex - Sexual orientation Sex/gender of who one finds sexually attractive - Gender Socially constructed attributes considered masculine and feminine - Gender assignment The gender one is assigned by others, usually at or before birth - Gender identity The gender that best fits for the person themselves - Gender performance The gender that comes across to other people based on appearance and conformance to behavioral expectations Sex Determination Terminology - As a biologist, I consider three definitions: A behavior with reproductive, psychological and social functions A type of reproduction that combines genetic information from two different individuals A category we are assigned to based on biological attributes relating to how we reproduce o Gonads o Reproductive cells o Hormones o Anatomy, physiology, behavior, pheromones, etc. - Sex determination: how our bodies come to have those biological attributes
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Sex and Gender from a Biological Perspective Sex Determination Overview - 1 Sex determination What starts sex determination? - 1 Sex Gonads - Biological sex Reproductive cells - 2 sex determination Hormones - 2 sexual characteristics Anatomy, physiology, pheromones, behavior Sex Determination Breakdown - Primary sex determination – None - 1 (primary) determination: Gonads None No sex determination Asexual reproduction Simultaneous hermaphrodite - Chromosomes - Environment - Social Environment Asexual Reproduction - Whole adult body splits into two or more parts Or - A single adult produces cells specialized for reproduction that can independently develop into offspring *slides 8-12
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Sex and Gender from a Biological Perspective Simultaneous Hermaphrodite - All individuals are both male and female at the same time - All individuals produce both eggs and sperm at the same time *slides 15-19 Chromosomes *slides 23-24 *slides 26-28 *slides 30-33 Notice This Pattern: When sex determination is environmental - Poor environmental and social conditions favor more males Short days Little nutrition Small host High population density - Favorable environmental and social conditions lead to production of more females *slide 33
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Sex and Gender from a Biological Perspective Summary of an Example: Nematode - Sex determination genetic Hermaphrodites XX Males XO - Simultaneous hermaphrodite Separate ovaries & testes Hermaphrodites can fertilize themselves
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  • Fall '19
  • Gamete, Sex organ

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