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Doctor insights on: Examples Of Dominant Genes

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Gene (Definition)

A hereditary unit consisting of a sequence of dna that occupies a specific location on a chromosome and determines a particular characteristic in an organism. Genes undergo mutation when their ...Read more


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What are dominant vs recessive gene diseases?

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

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Angelman Syndrome and whether the gene is recessive or dominant?

Angelman Syndrome and whether the gene is recessive or dominant?

Angelman syndrome: The answer is neither- most cases are not inherited at all. http://ghr.nlm.nih.gov/condition/angelman-syndrome ...Read more

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Why is progeria a dominant gene?

Why is progeria a dominant gene?

Progeria: Progeria is an extremely rare genetic disorder that may be seen at an early age and is unlikely to develop at age 48. Please go online to Wikipedia and read through the information. What is your height and weight? Are you getting shorter? Are you getting a change in weight? Once you have read the article you should probably see your doctor. ...Read more

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Please help? Is the disease gigantism a dominant or recessive gene?

Please help? Is the disease gigantism a dominant or recessive gene?

Neither: Pituitary gigantism results from a pituitary adenoma, an acquired tumor. There are a few dozen genetic syndromes in which a person may be extra-tall; common Marfan's is a dominant; there's a dominant family syndrome in which people are prone to get pituitary gigantism; there's at least one rare autosomal recessive with gigantism with multiple birth defects. ...Read more

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Is there a test to find out which combination of eye colour genes (recessive/dominant/colours) a person carries?

Is there a test to find out which combination of eye colour genes (recessive/dominant/colours) a person carries?

Not yet: You will have to rely on the geneological chart of eye color in your family to get close to this. At the moment, the isolation of the eye color genes is not high enough on the need chart to be worthwhile - diseases come first. ...Read more

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Is the beta-thalassemia gene recessive or dominant?

Is the beta-thalassemia gene recessive or dominant?

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 more

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Is Down syndrome an autosomal dominant gene ? Please advise!

Is Down syndrome an autosomal dominant gene ? Please advise!

Not autosomal: Down syndrome happens when an extra 21 chromosome is present in the cells of the body. It happens before conception when the donor egg fails to shed one of its 21 chromosomes in the formation of the egg & the male 21 joins the female pair & creates an embryo with 3 number 21's. It has nothing to do with autosomal traits or mutations in the gene code. ...Read more

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Is the dominant side of your brain determined by your genetics?

Is the dominant side of your brain determined by your genetics?

In part, yes: But the vast majority of folks have the left side of brain as dominant, even in the majority of left handers. ...Read more