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Doctor insights on: Duplication Syndrome

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Does the Asperger syndrome have xyy chromosome?

Does the Asperger syndrome have xyy chromosome?

Not by definition: Someone with xyy may has asperger's disorder but that is not part of the disorder itself. ...Read more

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Hows patau syndrome inherited?

Hows patau syndrome inherited?

Not inherited: Patau syndrome, or trisomy 13, is not inherited, in that a baby does not "get it" from either parent. It is usually caused when the egg does not divide properly at the time of fertilization. This accident causes a baby to get an extra number 13 chromosome in every one of its cells. Trisomy 13 is rare, but a very serious condition. Most babies with it die before birth or shortly after birth. ...Read more

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Which person discovered crouzonodermoskeletal syndrome (crouzon syndrome)?

Which person discovered crouzonodermoskeletal syndrome (crouzon syndrome)?

Crouzon: Crouzon craniofacial dysostosis was described by crouzon in 1912. The genetic cause was not identified until 1994 and the credit goes to a number of different geneticists - reardon and preston independently helped narrow the genetic inheritance to the fgfr2 gene. ...Read more

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Is goldenhar syndrome heritable?

Is goldenhar syndrome heritable?

It is a genetic synd: It is a genetic syndrome. There's a bout a 3% chance the child will pass it on and less than a 1% chance it would occur in a sibling of this child of same parents. ...Read more

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Is klinefelter's syndrome dominent or recessive?

Is klinefelter's syndrome dominent or recessive?

Error in formation: Humans have 23 pairs of chromosomes. During the formation of the egg, each pair splits and one of each travels to the egg. At conception, the sperm brings 22 + an X or Y & the new embryo now has 23 pairs (two of each). In Kleinfelter, the egg retains 2 X chromosomes instead of 1 & the sperm brings a Y.The fetus then has 23 pairs + the extra X. This is an error in formation, not an inherited trait ...Read more

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Is turner's syndrome dominant or recessive?

Neither: It is due to lack of one in the pair of X chromosomes. ...Read more

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Is XXY klinefelter's syndrome related at all to marfan's syndrome?

Is XXY klinefelter's syndrome related at all to marfan's syndrome?

No: The two syndromes have some similar features, but they are different syndromes that are unrelated. Klinefelter syndrome is caused by ahaving at least one extra x chromosome in a person who has a y chromosome (normal male=46 xy, klinefelter=47xxy). Typical marfan syndrome is caused by a mutation in fbn1, coding for fibrillin-1. ...Read more

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What chromosomal mutation results in alagille syndrome?

What chromosomal mutation results in alagille syndrome?

ALGS: Alagille syndrome (algs) is a complex multisystem disorder involving primarily the liver, heart, eyes, face, and skeleton. The two genes in which mutations are known to cause algs are jag1 and notch2. Mutations in jag1 are known to cause about 94%-96% of cases of algs. Mutations in notch2 are known to cause algs in 1%-2% of individuals. ...Read more

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Is patellofemoral syndrome typically associated with marfan's syndrome?

Is patellofemoral syndrome typically associated with marfan's syndrome?

PFS can happen: Marfan syndrome patients can get aches and pains in many joints because of the looser ligaments trying to hold the joints together at rest and under physical stress. Patellofemoral syndrome is common in normal, active school-aged children, so it is hard to tell whether or not it occurs more often in marfan syndrome kids. ...Read more

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Is angelman syndrome dominant or recessive?

Is angelman syndrome dominant or recessive?

Neither: Angelman's syndrome doesn't follow simple mendelian genetics. Rather, it's due to de novo single genetic mutations, translocational errors, chromosomal abnormalities, or more commonly epi-genetic mutations such as changes in dna methylation. ...Read more

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How is the genetic abnormality patau syndrome inherited?

How is the genetic abnormality patau syndrome inherited?

Non-disjunction.: The majority of cases of the lethal patau or trisomy 13 syndrome are caused by nondisjunction (47, +13) related to advanced maternal age. Robertsonian translocations of either parent can increase the risk for that couple, although most affected embryos die in utero. ...Read more

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What is patau syndrome, a trisomy?

What is patau syndrome, a trisomy?

Trisomy 13: Patau syndrome is also called trisomy 13. It occurs when a baby has 3 copies of the number 13 chromosome instead of the usual 2 copies. It causes severe physical problems and most babies with trisomy 13 die before birth or within the first year after birth. It usually happens because of an accident which occurs when the egg is fertilized, and occurs more commonly as mothers get older. ...Read more

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Dr. Jay Park Dr. Park
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Is williams syndrome a gene or chromosomal mutation ?

Dr. Jay Park Dr. Park
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Microdeletion: Williams syndrome is caused by small loss (deletion) of genetic material from long arm of chromosome number 7. ...Read more

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Is turners syndrome a genetic disorder?

Yes: Most females are born with 2 x chromosomes. Ts is a disorder resulting from missing one x chromosome or some part of it in the cells of the body. It is a disorder exclusive to females. Those with ts are born with it. Manifestations vary depending on the genetics. Small stature is one feature most girls have in common with each other. ...Read more

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Does aneuploidy cause Marfan syndrome?

Does aneuploidy cause Marfan syndrome?

Marfan is caused by : A mutation in the fibrillin gene on the long arm of chromosome 15 , 15q15-q21.3. Autisomal dominant inheritance with widely variable clinical findings. Aneuploidy is having an abnormal # of chromosomes from a genetic accident during cell reduction (meiosis). ...Read more

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What is deletion syndrome 22q.11?

Highly variable: This is fairly common and quite variable clinically depending on the extent of the deletion. DiGeorge and velocardialfacial syndrome patients may have deletions here. There's a good review at http://ghr.nlm.nih.gov/condition/22q112-deletion-syndrome ...Read more

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What is edwards syndrome (trisomy 18) like?

Extra chromosome: In trisomy 18 the patient has an extra chromosome 18. This genetic disorder frequently causes heart and kidney defects. They may have a small head and jaw and usually have severe developmental delay. Here is a link http://www.Trisomy18.Org/site/pageserver?Pagename=whatist18_whatis. ...Read more

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Is marfan's syndrome a genetic mutation?

Is marfan's syndrome a genetic mutation?

Yes: Yes it is a mutation in the fbn1 gene on chromosome 15. This gene is responsible for providing the instructions for making a protien called fibrillin which becomes part of microfibrils. Microfibrils are important for providing the strength and flexibility of connective tissue. Connective tissue provides strength and flexibility to bones, ligaments, muscles, blood vessels and heart values. ...Read more

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