1. Lesson 2: Biology, Sex and Gender
Robert Wonser

2. Lesson 2: Biology, Sex and Gender
Opposites?
Lesson 2: Biology, Sex and Gender

3. What about the biological evidence…
“…we have demonstrated that at 1 day old, human neonates demonstrate sexual dimorphism in both social and mechanical perception. Male infants show a stronger interest in mechanical objects, while female infants show a stronger interest in the face.”
Irrefutable proof of innate sex differences, right?
Lesson 2: Biology, Sex and Gender

4. The Face vs the Mobile Study
Is this evidence of a large natural difference between boys and girls proclivities?
How about when graphed out:
“Sex differences in human neonatal social perception” by Jennifer Connellana, Simon Baron-Cohena, Corresponding author contact information, the corresponding author, Sally Wheelwrighta, Anna Batkia, Jag Ahluwaliab
Found here:
Lesson 2: Biology, Sex and Gender

5. Lesson 2: Biology, Sex and Gender
Notice the tremendous overlap between the two.
Take away: the sexes aren’t opposites; even if differences precede socialization.
Lesson 2: Biology, Sex and Gender

6. Lesson 2: Biology, Sex and Gender
By the way, what exactly did the mobile and face they were looking at look like?
Lesson 2: Biology, Sex and Gender

7. Lesson 2: Biology, Sex and Gender
Nature vs Nurture
The nature vs. nurture debate refers to the ongoing discussion of the respective roles of genetics and socialization in determining individual behaviors and traits.
Ultimately both sides do play a role in making us the people that we are.
Lesson 2: Biology, Sex and Gender

8. Sapolsky’s “Trouble with Testosterone”
“Debunks” myth of testosterone causing aggressive behavior
Most studies find a correlation between high levels of testosterone and high levels of aggression, and vice versa
But this correlation does NOT prove causation
In fact, aggressive behavior causes an increase in testosterone secretion
The hormone simply exaggerates patterns in the brain and body that already exist, and are already responding to environmental triggers of aggression (“permissive effect”)
Lesson 2: Biology, Sex and Gender

9. Lesson 2: Biology, Sex and Gender
Sapolsky
NOT biology, NOT the environment – IS the interaction between the two
Violence is more complex than 1 hormone – biology is meaningless outside the social context in which it occurs
Lesson 2: Biology, Sex and Gender

10. Lesson 2: Biology, Sex and Gender
As Nature Made Him
David Reimer was subjected to gender reassignment surgery at 18 months old. What does his story tell us about the relationship between biological sex and gender identity?
Lesson 2: Biology, Sex and Gender

11. Lesson 2: Biology, Sex and Gender
Sex refers to an individual’s membership in one of two biologically distinct categories—male or female.
How many sexes are there?
Lesson 2: Biology, Sex and Gender

12. Chromosomes, Hormones and Genes
What sex are you and how do you know?
The case of Maria Patino and the Olympics.
A test revealed she had a Y chromosome and hidden testes.
IOC’s ruling was based on cultural beliefs about gender, not scientific facts
Lesson 2: Biology, Sex and Gender

13. Lesson 2: Biology, Sex and Gender
Xs and Ys
Usually XX =female and XY = male
What about these situations?
XO and XXX or XYYs and XXYs?
Not all variations in biological sex are chromosomal:
Congenital adrenal hyperplasia (CAH) is a condition related to steroid hormone production that masculinizes XX individuals.
There’s also Androgen insensitivity syndrome (AIS) which was the condition that made Patino feminine despite her Y chromosome, it causes XY children to develop female genitalia.
Hermaphroditism and gonadal dysgenesis—abnormal gonadal development—refers to various conditions in which individual anatomies include gonads or secondary sex characteristics of both sexes.
Lesson 2: Biology, Sex and Gender

14. Sexed Bodies in Other times and Places
Whether or not biology is fixed and immutable, the way we understand the biology of sex is not.
Biology and sexuality mirror the social order
In premodern times, everyone knew that women were like men but inferior.
Believing is seeing
A belief in male superiority contributed to a vision of sexed bodies that reflected and supported those beliefs
Lesson 2: Biology, Sex and Gender

15. Lesson 2: Biology, Sex and Gender
Intersex
17 ambiguously sexed infants are born for every 1,000 births each year.
Where is their place in a two sex world?
The National Institute of Health divides intersex into four categories:
Lesson 2: Biology, Sex and Gender

16. XX Intersex (formerly female pseudo-hermaphroditism).
Chromosomes and ovaries of a woman, external genitals that appear male.
Usually resulting from exposure of female fetus to excess male hormones before birth or CAH.
Has normal uterus and Fallopian tubes, but the labia fuse and the clitoris is large and penis-like.
Lesson 2: Biology, Sex and Gender

17. XY Intersex (formally male pseudo-hermaphroditism)
XY chromosomes, but with ambiguous or clearly female external genitals.
Internally, testes may be normal, malformed or absent.
One type; 5-alpha-reductase deficiency (as in the novel Middlesex), infants appear female until puberty, when bodies are virilized.
AIS, androgen insensitivity syndrome or testicular feminization is a condition in which a person has XY chromosomes, but the receptors to male hormones do not function and the genitals of thee in individuals appear female.
Lesson 2: Biology, Sex and Gender

18. Lesson 2: Biology, Sex and Gender
True Gonadal Intersex
Has both ovarian and testicular tissue in one or both gonads.
Cause unknown but animal studies link to exposure to common agricultural pesticides.
Other suspected cause: in vitro fertilization in which an XX and XY embryo merge
Complex or undetermined intersex
Different chromosome configurations can result in ambiguous sex development. These include:
XO (only one X chromosome), XXY, XXX – both cases have an extra chromosome, either an X or a Y.
Lesson 2: Biology, Sex and Gender

19. Lesson 2: Biology, Sex and Gender
“Social Emergency”
How do we ‘deal with’ these people socially and medically?
American Academy of Pediatrics calls them “social emergencies”
Sex reassignment surgeries to place the child into one of the two ‘natural’ sexes.
This is chosen for intersex people, not by them.
Used to be if a baby was born with a “micro-penis” (less than 1.5 centimeters long and 0.7 centimeters wide) it was a candidate for sex reassignment surgery.
Is this medically necessary? Or are they “social surgeries” like face lifts and nose jobs?
Lesson 2: Biology, Sex and Gender

20. Lesson 2: Biology, Sex and Gender
The Phall-o-meter
When bodies don’t fit into our pre-existing notions of male and female, we will force them to, even if it involves a knife. 
Clitorises that are longer than .9 cm and penises that are shorter than 2.5 must be fixed. 
Lesson 2: Biology, Sex and Gender

21. Intersex as Lived Reality
Intersex was constructed as a medical and social problem by a particular group of medical experts at a particular historical moment and in a particular socio-historical context.
Visit Intersex Society of North America (ISNA) at
Lesson 2: Biology, Sex and Gender

22. Lesson 2: Biology, Sex and Gender
Gender refers to the physical, behavioral, and personality traits that a group considers normal for its male and female members.
Masculinity and femininity
How many genders are there?
Lesson 2: Biology, Sex and Gender

23. How many genders are there? The evidence from other cultures
Thomas theorem: “If men [and women] believe things to be real, they are real in their consequences.” (Thomas 1928, ).
If we believe men and women are different then we build institutions around this idea.
As socially competent members of our society, we see bodies through the cultural lenses of sex and gender, and we shape actual bodies to our expectations.
Are there practices you engage in to shape your body to the expectations of our culture?
Lesson 2: Biology, Sex and Gender

24. Lesson 2: Biology, Sex and Gender
Berdaches
“women-men” of First Nation (Native American) societies.
“two-spirit” peoples
Socially distinct from their fully male and fully female kin.
Took up occupations designated as women’s, dressed as women, and had sexual relations with men.
Possible fourth category: “men-women”
Biological females who lived as men, hunted, took up men’s work, fought in wars and married women.
Gender was not equated with biological sex or sexual identity.
The fact that 3rd and 4th sex status existed was due to the political and economic context within which these genders appeared: egalitarian relations, no accumulation of wealth, low level of division of labor.
Similar to pre capitalism Europe and rural colonial American society before the advent of capitalism.
Lesson 2: Biology, Sex and Gender

25. Lesson 2: Biology, Sex and Gender
Hijras of India
Neither men nor women, nor are they seen as homosexuals.
Key defining characteristic is the absence of the male external genitalia (often a result of an elective surgery) or “imperfect genitals”.
Culturally, “not-men” and view themselves as “man minus maleness” (Nanda 1990).
Lesson 2: Biology, Sex and Gender

26. Constructionist Approach to Gender Identity
Most sociologists use a constructionist approach and see gender as a social construction and acknowledge the possibility that the male–female categories are not the only way of classifying individuals.
Constructionists believe that gender is constructed, or created, through our interactions with other members of society.
In the United States we tend to classify people as being male or female, but other societies have different classification systems (hijras and berdaches for example) and people are treated differently based on the norms associated with that system.
Lesson 2: Biology, Sex and Gender

27. Lesson 2: Biology, Sex and Gender
Who is this child?
FDR! Our 32nd president
Lesson 2: Biology, Sex and Gender 27

28. Sexual Dimorphism in World of Warcraft
Before player feedback
Lesson 2: Biology, Sex and Gender
After player feedback