23 PAIRS OF CHROMOSOMES, MALE - XY, FEMALE - XX, ALL START FEMALE AND MAY DEVELOP INTO MALE.

KLEINFELTERS SYNDROME, TURNERS SYNDROME

XX, 1/1000, TALL, LESS MUSCULAR, BROAD HIPS, LESS FACIAL AND BODY HAIR, LOW TESTOSTERONE PRODUCTION

XO, 1/2000, SHORT, WEBBED NECK, RUDIMENTARY OVARIES, NO MENSTRUATION

GENETIC MALES - TOO LITTLE TESTOSTERONE - MAY APPEAR EXTERNALLY FEMALE

NOT REQUIRED FOR DEVELOPMENT OF FEMALE GENITALIA, INSTEAD PROMOTES SECONDARY FEMALE SEXUAL CHARACTERISTICS.

BIOLOGICAL SEX ISN’T THE MAIN FACTOR, INTERSEX PEOPLE COULD BE RAISED AS A BOY OR A GIRL. THE SEX THE CHILD IS REARED > BIOLOGICAL SEX

DAVID REIMER - GENETICALLY MALE, RAISED AS GIRL, GIVEN FEMALE HORMONE TREATMENTS. ENDED UP REVERTING BACK TO MALE

REINER & GEARHART - 16 MALES BORN WITH NO PENIS. 14 RAISED AS FEMALE. 8 REASSIGNED TO MALE BY AGE OF 16 = NATURE > NURTURE

REIMER - CASE STUDY - RESULTS MIGHTN’T PALLY TO OTHERS - LACKS GENERALISABILITY. REINER & GEARHART WAS A SMALL SAMPLE - LACK POPULATION VALIDITY

BAILEY - XX FEMALES EXPOSED PRENATAL TO ANDROGENS SHOWED TOMBOY BEHAVIOUR. HORMONES MAY INFLUENCE BRAIN DEVELOPMENT.

SUPPORT NEED FOR URGENCY IN IDENTIFICATION. INTERSEX BABIES ARE NOT TREATED SURGICALLY UNTIL THEY ARE OLDER AND CAN DECIDE THEMSELVES.