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Is Asperger Syndrome Caused By A Bad Chromosome
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Two likely forms: Progeria syndrome is considered a sporadic (new mutation) phenomenon that has few prenatal indicators. At an average birth wt of 6lb (2.7kg), the relatively small size during gestation is not specific to this disorder. There are rare instances of siblings to normal parents, showing that an autosomal recessive form exists.Most begin to show signs by 6-18mo. ...Read more
No: XYY syndrome is neither autosomal dominant or recessive. See a geneticist about inheritance patterns. It is often causes by chromosome nondysjunction (lack of separation). There is not a particular chromosome but the sex chromosomes are called X and Y. Females typically are XX and Males XY. XYY is causes by a Y chromosome separation issue. XYY individuals are usually normal males ...Read more
It depends: It depends on what one means by dwarfism: a short stature in general (this depends on your ethnic origin as well) or a genetic syndrome which involves extremely short stature as part of the clinical picture. Some of them are dominant = inherited from a parent or rose spontaneously (de novo) in the individual. Some of them are recessive (=parents unaffected carriers of the condition). ...Read more
Not true: Trisomy 13 (3 copies of chromosome 13 in all your cells) is caused by an error in the way one of your two chromosome 13s move when you make an egg or a sperm. It's called nondisjunction. When it happens, it's no one's fault. Marriage between close relatives, like 1st cousins, is common in many places in the world, and trisomy 13 is just as rare there as it is everywhere else. ...Read moreSee 1 more doctor answer
Sex chromosome: Turner syndrome involves the survival of a fetus that carries only one of 2 sex chromosomes, that being an x which assigns it female sex features. There are mosaic forms that may have mostly one x while a percentage of cells carry xx. The non-sex chromosomes are not involved in this process. ...Read more
Many generations: The condition will be seen generation after generation in some individuals in the family, and will not skip generations although eventually with new family members introduced into the family children may be born without it due to the dominant allele potentially being replaced by a wild type normal allele that is not associated with the effects of the dominant mutation. Take care! ...Read more
Can you tell me is hurler's syndrome nondisjunction, a sex-linked disorder or a type of mutation in a specific chromosome?
Recessive disorder: Hurler syndrome is caused by a mutation in idua gene located in chromosome #4. It is an autosomal recessive condition which means that one has both copies of the gene changed, the one inherited from father, and the one from mother. Parents are thus carriers of the condition. ...Read more
No one knows: Asperger's syndrome now has been incorporated into autism spectrum disorders, which a great deal of work is being done to answer your question. We believe that genetics plays a major role as well as abnormalities in the neurological function in the brain. Environmental issues seem only to treatment and support of the illness. ...Read more
Angelman s.: Newborns with genetic abnormality involving chromosome #15q ( partial deletion of short piece of that chromosome). ...Read more
22 or 21 whatever ?: Trisomy's are causes by an abnormality at conception. The egg & sperm are both expected to bring one chromosome from each of the parents 23 pairs.If an extra comes along in the egg or sperm (usually egg), the joining produces 22 pairs & one triplet or trisomy.Chromosomes carry the genes. Too many genes confuse the cell. Some lump this with gene disorders because gene docs follow the patients ...Read moreSee 1 more doctor answer
Neither: cancer is caused by mutation in well defined genes that first lead to immortality and then the production of proteins that stimulate the cell to behave in an aggressive fashion. In Rous Sarcoma, the virus enters the Src gene causing a mutation giving rise to production of Src protein. Inhibition of Src gene causes sarcoma to revert to normal fibroblast. ...Read more
No: Down syndrome is an abnormality of chromosome numbers, not a mutation on a sex chromosome. During conception only one of chromosome of each pair is given by both parents to the fertile egg.If a parent adds their 2 # 21 chm to the other parents # 21, 3 end up in the egg ; the excess 21 causes the all the problems.Rare forms are causes by a extra piece of a 21, but that's another issue. ...Read moreSee 1 more doctor answer
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