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Examples of such accidents are development of an extra chromosome 18 (trisomy 18) and Down syndrome.
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Which genetic disorder does an extra chromosome cause?
trisomy There several types of trisomy, the most well known is probably Down syndrome, which is trisomy 21.
What maternal conditions that interrupt oxygen flow can cause mental retardation in the fetus?
When the mother has high blood pressure (hypertension ) or blood poisoning (toxemia), the flow of oxygen to the fetus may be reduced, causing brain damage and mental retardation.
What are the dangers of isotretinoin?
Isotretinoin can cause serious birth defects, including mental retardation and physical deformities. This medicine should not be used during pregnancy.
When is it necessary to consult with a neurologist or neuropsychologist in the diagnosis of mental retardation?
If a neurological cause such as brain injury is suspected, the child may be referred to a neurologist or neuropsychologist for testing.
How do mutations relate to traits?
Mutations cause certain traits.
What gene is responsible for the majority of inherited mental retardation?
Fragile X, a defect in the chromosome that determines sex, is the most common inherited cause of mental retardation.
Exposure to what element can cause mental retardation?
Exposure to lead can also cause mental retardation.
Does over-study causes mental retardation?
Overstudy does not cause mental retardation.
In how many cases of mental retardation does the cause remain a mystery?
In about 35% of cases, the cause of mental retardation cannot be found.
How often does autism result in mental retardation?
The two conditions are not at all related. Autism does not cause mental retardation.
What Immunizations can prevent diseases that cause mental retardation?
Hyperthyroidism, whooping cough, chickenpox, measles, and Hib disease (a bacterial infection) may cause mental retardation if they are not treated adequately.
What maternal illnesses can cause mental retardation in infants?
Maternal infections and such illnesses as glandular disorders, rubella, toxoplasmosis, and cytomegalovirus (CMV) infection may cause mental retardation
Can being involved in an accident cause mental retardation?
In 4% of bacterial meningitis cases in children, there is seen to be some mental retardation.
Which genetic disorder does an extra chromosome cause?
trisomy There several types of trisomy, the most well known is probably Down syndrome, which is trisomy 21.
What gene abnormality may cause mental retardation?
Mental retardation may be caused by an inherited abnormality of the genes, such as fragile X syndrome.
What inflammations and infections of the brain can cause mental retardation?
An infection of the membrane covering the brain (meningitis) or an inflammation of the brain itself (encephalitis) cause swelling that in turn may cause brain damage and mental retardation.
Is albinism a chromosome disorder?
no albinism is a genetic disorders that changes an offsprings physical appearance from its original parents. it may also bring out the offsprings recessive traits. its also a cause of mental retardation
