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  #1  
Old 07-07-2011
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Genetics The most common cause of inherited Mental Retardation

What is the most common cause of inherited Mental Retardation?

A) Fetal Alcohol Syndrome
B) Fragile X Syndrome
C) Klinefelter Syndrome
D) Down Syndrmoe
E) Turner Syndrome
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  #2  
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Inherited ?
B) Fragile X Syndrome
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yes b...i am not sure...please give answer...thanks
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Old 07-07-2011
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B) Fragile X Syndrome 100%
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Old 07-07-2011
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Jum...

Down syndrome is the most common cause of Mental retardation.
Fragile X synd is the second most common.
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Old 07-07-2011
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B) Fragile x is the most common inherited cause mental retardation.

Down's is the most common genetic cause of mental retardation, and Fragile X is second to Down's. The point here is that they are both genetic defects, but Down's is congenital whereas Fragile X is inherited.
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Quote:
Originally Posted by rulz View Post
Jum...

Down syndrome is the most common cause of Mental retardation.
Fragile X synd is the second most common.
nop....the MCC is Fetal Alcohol Syndrome
Down's is the most common genetic cause!
and in this case is Inherited, so the only option is Fragile X Syndrome
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Quote:
Originally Posted by bebix View Post
nop....the MCC is Fetal Alcohol Syndrome
Down's is the most common genetic cause!
and in this case is Inherited, so the only option is Fragile X Syndrome
Ok, i just read what heigh and you said... Thanks both...
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Yup the answer is FRAGILE X SYNDROME
That is the most common cause of INHERITED Mental Retardation.
Most common cause of GENETIC Mental Retardation is DOWN SYNDROME
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Yeah I agree with bebix,
MCC of MR is Fetal Alcohol
MCC Congenital is Down's
MCC Inherited is Fargile X
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Warning!

MOST COMMON CAUSE of CONGENITAL mental retardation OVERALL
is DOWNS syndrome (uworld source)
2nd is Fragile X Syndrome
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Old 01-19-2015
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the most common chromosomal cause of MR is fragile X syndrome, lately it surpassed down syndrome.
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Behavioral-Sciences-, Genetics-, Step-1-Questions, Syndromes-Acronyms

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