atypical sex chromosome patterns

Question 1

klinefelters syndrome

Answer 1

XXY chromosome structure - have an additional X chromosome
1 in 600 males have Klinefelters syndrome

Question 2

physical characteristics of Klinefelters syndrome

Answer 2

• reduced body hair
• reduced muscle growth
• underdeveloped genitals
• breast growth

Question 3

psychological characteristics

Answer 3

• issues with language skills and reading ability
• passive, shy, lack of interest in sexual activity
• dont respond well to stressful situations
• bad problem solving skills - problems with executive functions

Question 4

chromosomal structure for turners syndrome

Answer 4

XO - absence of one X chromosome.
occurs 1 in every 2000 females

Question 5

physical characteristics of turners syndrome

Answer 5

• no menstrual cycle
• broad chest and underdeveloped breasts
• low set ears and webbed neck
• shorter than average

Question 6

psychological characteristics

Answer 6

• high reading ability
• low spatial ability
• socially immature and poor relationships with peers.

Question 7

2 treatment of turners syndrome and their effects

Answer 7

growth hormone injections - increases height
oestrogen replacement therapy - breast development and menstruation

Question 8

strength of atypical chromosomes - contribution to the nature/nurture debate

Answer 8

the fact that language ability has been affected by chromosomal abnormality suggests our biology plays a role in this ability rather than the way we are educated. Therefore chromosomes and genes have a direct influence on intelligence

Question 9

counterpoint

Answer 9

there is an issue with cause and effect. Social immaturity in turners syndrome may be caused by individuals treating them this way based on their appearance. in this case they will not develop the correct social skills.
Shows that it could be wrong to assume that psychological and behavioural differences in people with atypical sex chromosome patterns are due to nature.