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Sex determination Androgen insensitivity syndromeLeads to ambiguous genitalia
Sex chromosome abnormalities
Klinefelter's syndroneXXY male Infertile or reduced fertility Gynecomastia (breast development) Late development (mental and physical)
Turner's syndrome X0 (“X-null”) female InfertilitySwollen hands and feet Wide, webbed neck Incomplete puberty No periods
Congenital Adrenal HypoplasiaXX females have prenatally high levels of male hormones resulting in varying degrees of external male genitalia
Androgen insensitivity syndromeXY chromosomes SRY gene produces testes Testes release testosterone, but the hormone has little or no effect Can be complete or incomplete
Intersex Both CAH and incomplete AIS can lead to ambiguous genitaliae.g. partial closing of the outer labia, an enlarged clitoris, and a short vagina
Gender dysphoria A condition in which a person feels that there is a mismatch between their biological sex and their gender identity
Body map A strip of cortex holds a complete (though distorted) body map If a body part is amputated it may be experienced as a “phantom limb” because the brain is not altered
Phantom penis Experienced by 2/3 of men who lose theirs in an accidentExperienced by 1/3 of MTF transsexuals, following surgery Experieneced by 2/3 FTM transsexuals, from childhood
What is a Karyotype? Karyotype: picture of an individual’s chromosomes arranged in homologous pairs. Chromosomes are usually extracted during METAPHASE.
(and other animals) become male or female?
Gender Issues © Robert J. Atkins, Ph.D..
Sex for the purposes of this class refers to 4 components
Chapter 5: Gender Issues
Chapter 11 Reproductive Behaviors
6 Sexual Development.
Today we will… Consider how biological psychologists might explain sex & gender Examine chromosomal influences on sex/gender development Examine hormonal.
Most mammals have one pair of sex chromosomes Males Females
Biological Abnormalities Chromosomal Abnormalities Hormonal Abnormalities Gender Identity Creation/Change.
Numerical chromosome Aberrations
Sex and Gender Differences
Sex, Gender, and Transgender
Hormones & Sexual Development
14.21 General scheme of development in the vertebrate kidney (Part 1)
Sex and the Brain.
Chapter Ten Gender: Expectations, Roles, and Behaviors.
COGNITIVE SCIENCE 17 Why Sex is Necessary Jaime A. Pineda, Ph.D.
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