MENTAL RETARDATION
X-linked disease leading to mental retardation is :
| A | Myotonic dystrophy | |
| B | Fragile-X syndrome | |
| C |
Tuberous sclerosis |
|
| D |
Phenylketonuria |
X-linked disease leading to mental retardation is :
| A |
Myotonic dystrophy |
|
| B |
Fragile-X syndrome |
|
| C |
Tuberous sclerosis |
|
| D |
Phenylketonuria |
Ans:B i.e. Fragile X-Syndrome
Fragile X syndrome (FXS) is the most common inherited mental retardation disorder, occurring in about 1 in 3,500 males and approximately 1 in 7,000 females.
Affected males are characterized by mild to moderate mental retardation, developmental delay, and behavioral problems.
Which is MC genetic cause of mental retardation –
| A |
Tuberous sclerosis |
|
| B |
Cri-du-chat syndrome |
|
| C |
Fragile-x-syndrome |
|
| D |
Angel’s syndrome |
Ans. is ‘c’ i.e., Fragile-X-syndrome
o Down’s syndrome is the most common genetic cause of mental retardation, and fragile-X is second to Down’s.
Also know
o Most common inherited cause of mental retardation is fragile-X-syndrome (because down’s syndrome is congenital cause but not inherited).
| A |
Mild |
|
| B |
Moderate |
|
| C |
Severe |
|
| D |
Borderline |
Ans. is ‘a’ i.e., Mild
IQ in moderate mental retardation –
| A |
90-70 |
|
| B |
70-50 |
|
| C |
50-35 |
|
| D |
35-20 |
Ans. is ‘C’ i.e., 50-35
Most common type of mental retardation –
| A |
Mild |
|
| B |
Moderate |
|
| C |
Severe |
|
| D |
Profound |
Ans. is ‘a’ i.e., Mild
Mental retardation is defined if IQ is below ‑
| A |
90 |
|
| B |
80 |
|
| C |
70 |
|
| D |
60 |
Ans. is `c’ i.e., 70
o A child with IQ . 70 is called mentally retarded.
IQ – 40 level of mental retardation:
NEET 13
| A |
Mild |
|
| B |
Moderate |
|
| C |
Severe |
|
| D |
Profound |
Ans. Moderate
Severe mental retardation is:
NEET 13
| A |
50-70 |
|
| B |
35-50 |
|
| C |
20-35 |
|
| D |
< 20 |
Ans. 20-35
IQ in mild mental retardation is
| A |
50-70 |
|
| B |
35-49 |
|
| C |
20-34 |
|
| D |
< 20 |
Ans. is ‘a’ i.e., 50-70
Most common type of mental retardation ‑
| A |
Mild |
|
| B |
Moderate |
|
| C |
Severe |
|
| D |
Profound |
Ans. is ‘a’ i.e., Mild
IQ of 15 is which grade of mental retardation ‑
| A |
Mild |
|
| B |
Moderate |
|
| C |
Borderline |
|
| D |
Profound |
Ans. is.’d’ i.e., Profound
Category IQ
| Normal intelligence | > 90 |
| Borderline intelligence | 70 – 89 |
|
Mental retardation
Mild MR Moderate MR Severe MR Profound MR |
50 – 69
35 – 49 20-34 0-19 |
| A |
Mild |
|
| B |
Moderate |
|
| C |
Severe |
|
| D |
Profound |
Ans. is ‘a’ i.e., Mild
