Gender - The Role of Genes and Hormones in Gender Flashcards
(36 cards)
What is the biological gender of a baby determined by?
It’s 23rd chromosome
How many pairs of chromosomes does a human being have?
23
What two parts give them 23rd pair of chromosomes?
Ovum and Sperm
What type of chromosome does the ovum give?
X
What type of chromosome does the sperm give?
X or Y
What pairing of chromosomes gives a girl?
XX
What pairing of chromosomes gives a boy?
XY
What happens six weeks after conception?
Genes prompt gonads to become testes or ovaries
What do the testes release?
Testosterone
What does testosterone do in foetuses?
Stimulate the development of male internal organs
What happens if foetuses don’t have the influence of testosterone?
The foetus develops female characteristics
What is an evaluation for the role of genes?
David Reimer
Briefly describe David Reimer
Identical twin, suffered damage to pens, raised as a girl, happier with boys toys, didn’t fit in, found out his biology, re-assigned his gender, married a woman, became depressed after they divorced, committed suicide.
What does David Reimer tell us about there influences of genes on gender?
Genes are best predictor of a person’s gender identity. David was biological a boy, raised as a female, but wanted to be a male.
Why aren’t the findings and conclusions of the David Reimer study reliable?
Dr Money was very involved in the study, may have influenced the results - researcher bias.
ALSO
Case study, only happened to one person, cannot replicate the results
What two hormones can influence gender?
Testosterone and oestrogen
What does testosterone do to the brain?
Leads to increased development in the right hemisphere
What is the right hemisphere of the brain associated with?
Visual-spatial processing
What doesn’t develop as quickly in XY foetuses?
Left hemisphere of brain, especially near Wernicke’s area
What is the left hemisphere of the brain associated with?
Understanding language
What does brain development tell us about males and females?
Biological females brains give them better language skills. Biological males brains give them better spatial skills.
What two studies and one focus area are associated with the Research relating to the effect of testosterone on gendered behaviour?
Young et al (1964)
Money and Ehrhardt
Congenital Adrenal Hyperplasia
What happened in Young et al (1964)?
Increased the am out of male hormones female monkeys were exposed to in the uterus, found they spent more time in rough and tumble play compared to control group.
Evaluate the study of Young et al (1964).
‘Rough and tumble play’ is a subjective measurement
Animal research is controversial, rights by virtue of their ‘inherent value’