atypical sex chromosome patterns Flashcards
name 2 examples of atypical sex chromosome patterns
Klinefelter’s syndrome
Turner’s syndrome
how many males does Klinefelter’s syndrome affect
1/600
with Klinefelter’s syndrome what is the chromosomal pattern
XXY
what % of people with Klinefelter’s are diagnosed through prenatal diagonsis
10%
what fraction of males are living with Klinefelter’s syndrome and don’t know that they have it
2/3
how are most diagnosis’ for Klinefelter’s syndrome found
through medical examination for an unrelated problem
give the physical characteristics for someone who has Klinefelter’s syndrome
less body hair
breast development at puberty (gynaeconastia)
“softening” “rounding” of body contours
long gangly limbs
undeveloped genitals
problems with coordination and clumsiness
susceptible to breast cancer and other problems that are more commonly found in females
give the psychological characteristics for someone who has Klinefelter’s syndrome
poorly developed language skills and reading ability
passive, shy, lack interest sexual activity
don’t respond well to stressful situations
problems with memory and problem solving
what biological sex does Turner’s syndrome affect
1/5000
what is the chromosomal pattern of someone with Turner’s syndrome
XO
give the physical characteristics of Turner’s syndrome
no menstrual cycle (ovaries fail to develop so are sterile)
don’t develop breasts at puberty
broad “shield” chest
low set ears
webbed neck
hips are not much bigger than waist
adults are physically immature so retain appearance of pre pubescent girls
give the psychological characteristics of Turner’s syndrome
higher than average reading ability
performance on spatial, visual. mathematical tasks are lower than normal
social immature
have trouble relating to peers and fitting in
