Ataypical Sex Chromosomes Flashcards
What is a normal males chromosome pattern?
XY
What is a normal females chromosome pattern?
XX
What is the turners syndrome?
where the chromosome loses an X and becomes less female
What is the klinefelters disease?
Another X chromosome, becomes more female but is a male.
An internal symptom for the turners syndrome?
Ovaries fail to develop
An internal symptom for the klinefelters disease?
Osteoporosis
What is the turners syndrome chromosome pattern?
XO
What is the klinefelters disease chromosome pattern?
XXY
What are webbing of the neck, short stature, elbow deformity and low hair line external symptoms of?
Turners syndrome
What are taller than average, reduced facial hair, breast development, small tested & feminine fat external symptoms of?
The klinefelters disease
What are 3 associated problems to the turners syndrome?
- low visual memory
- higher than average verbal ability
- difficulties in social adjustments
What are 3 associated problems for the klinefelters disease?
- poor language skills
- poor reading ability
- calm and shy
What is the typical male hormones?
Androgens
What are androgens?
- releases testosterone allows the male foetus to develop.
- pituitary system will stimulate the appropriate glands & brain will lateralise
Does brain lateralisation happen before or after birth as a result of testosterone?
Before
An Atypical male hormone that happens in both males and females?
Congenital adrenal hyperplasia (CAH)
Does the congenital adrenal hyperplasia cause adrenal glands to produce androgens regardless whether testes are present?
Yes
What does the congenital adrenal hyperplasia cause girls to be like?
Tomboyish
When the congenital adrenal hyperplasia happens to males what does it make them be like?
More incline to physical activities.
therefore testosterone is responsible for?
Male behaviour
What is a typical female hormone?
Oestrogen
The sex hormone oestrogen affects a persons behaviour by?
Leading to high levels of anti-social behaviour.
What do androgens have on psychological development?
Leads to brain lateralisation, uses one side of the brain like males.
What is the biological theory where the circumcision went wrong?
Where the twins Brian & Bruce were Born but Bruce’s penis got burnt off, called him Brenda and brought him up as a girl.
Brian/Bruce - Brenda’s case study shows?
That it supports biology because even when he was brought up as a girl he knew he was still a male all along.
