Doctor insights on:
Is Cystic Fibrosis Dominant Or Recessive Gene
From a medical standpoint, "genetic" refers to the potential heritability of various medical conditions. While some conditions are inevitable (at some point in one's life) as a consequence of simple genetic heritability (eg huntington's disease), a large number of medical conditions (including all behaviorial health disorders) are the expressed final pathway of a ...Read more
Neither: People normally have 2 beta globulin genes. A mutation in one or both genes leads to 3 levels of beta thalassemia. The genetics of the disorder is not all-or-none nor dominant-recessive. Instead, more or worse mutations causes worse disease. One mutation = beta thal trait (mild symptoms), 2 mutations = beta thal intermedia (transfusions sometimes) or beta thal major (lifelong transfusions needed). ...Read moreSee 1 more doctor answer
Recessive: Sickle cell is autosomal recessive which means both parents must have a copy of the defective allele (one or both can be carriers but exhibit no symptoms). ...Read more
Is there a difference between autosomal dominant and autosomal recessive polycystic kidney disease?
Yes: The dominant form occurs mostly in adults. It is inherited but it takes time to show up as a diagnosable disease in middle to later age. Depending on your luck you either have it from your parent or not( 50% chance).The recessive form could be carried by seemingly healthy persons and when manifests as a disease in the offspring, it shows up at a much earlier age. ...Read more
See below: With a dominant gene trait, the child only needs to receive one copy of the abnormal gene. So, they have a 50% chance of getting the gene. With a recessive gene, the child needs 2 copies of the gene. So, they have a 25% chance of having both genes. ...Read more
Angelman syndrome: The answer is neither- most cases are not inherited at all. http://ghr.nlm.nih.gov/condition/angelman-syndrome ...Read more
It's complicated: There is no single gene for obesity. There are at least 30 different genes related to obesity (probably many more); some are recessive and some are dominant. but even amongst those who have a genetic predisposition, diet and lifestyle still play a major role. Not everyone with genetic tendencies to obesity become obese. See http://tinyurl.com/h4gllx8 ...Read moreSee 1 more doctor answer
Neither: Any defect like trisomy 13, that involves acquiring an extra chromosome, has nothing to do with dominant or recessive genes. It occurs when usually the egg carries 2 rather than 1 of the 13 chromosomes. Fertilization by a normal sperm with one of every chromosome creates an embryo with three # 13's.If the embryo survives pregnancy it emerges as a trisomy 13 infant with all the problems they have. ...Read more
None of the above: Edward syndrome is brought on by an abnormality of chromosome numbers, specifically an extra 18. The abnormal egg with a single chromosome 1-17 & 19-22 + x has a pair of 18's. When the sperm brings a single chromosome 1-22 + x or y then the embryo ends up with 47 chromosomes rather than 46 in every cell.(3-18's) the excess distorts the organ building information & defects arise. ...Read moreSee 1 more doctor answer
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
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