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Unfortunately, HD is carried on a dominant gene. If one parent has the gene for HD, and the other does not, the offspring has a 50/50 chance of developing HD. However, if you do NOT inherit the gene for HD, you cannot be a "carrier" of HD. The Huntingtons Disease Society of America has more information at their website. You may also contact me through my message board if you need additional information.
What else can I help you with?
Compare the inheritance of Huntingtons disease with the inheritance of sickle cell anemia?
Huntingtons disease is Autosomal dominant, i.e. a 50% chance of inheritance if one parent has the gene. Where as sickle cell anemia is autosomal recessive. This gives a 25% chance of inheritance if both parents are carriers.
What age do you get huntingtons disease?
For a person with the Huntingtons gene the first symptoms usually strike in late middle age at around 50-55. There are people however with the gene who have had first symptoms in their late 80s and some in their early 20s. You have to have the gene to get the disease.
Who found the gene for huntingtons disease?
The hunt for the gene was accomplished by the work of many dedicated researchers working cooperatively.
If an individual expresses a dominant disease will the children always inherit the disease?
Not always. It depends if the individual is a hybrid- meaning they have both the dominant and the recessive gene. They can pass on the recessive gene instead of the dominant one, and assuming the other parents also passes on the recessive gene, the child will not inherit the disease.
. Is a person who is homozygous recessive for a recessive genetic disease a carrier?
No, because he or she cannot pass the gene on to his or her offspring (because he or she does not have a copy of the gene).
Many serious diseases can be passed from parent to offspring through genes. In which case given below is a recessive disease NOT able to be passed on?
A recessive disease is not able to be passed on if both parents are carriers of the gene but do not express the disease themselves. In this case, the offspring would only inherit the disease if they receive two copies of the recessive gene, one from each parent. If the child inherits only one recessive gene and one dominant gene, they will be a carrier but will not exhibit the disease. Thus, the disease can only be passed on if both parents contribute the recessive allele.
IS Huntington's disease an autosomal recessive gene?
Nope. Dominant
What are the chances a child will be born with a hereditary disorder or disease?
Depends on the disease- dominant gene or recessive gene- and the genotypes of the parents.
Why is huntingtons disease more common than other serious dominant genetic disorders?
Huntingtons is a genetically inherited disease from a parent. when chromosomes are passed onto a child, the child wont always receive the chromosome containing the gene. But, if they do inherit the gene they will have the disease no matter what, because the disease is dominant. If it was recessive, the child could inherit the disease but not necessarily get the disease.
Is a person who is homozygous recessive for a recessive genetic disese a carrier?
As long as a persons genotype consists of at least one recessive gene, they can pass it on to offspring to give them the disease, which makes them a carrier. Since this persons genes are both recessive, it is definite that they will pass on the recessive gene.
What is an individual who has a recessive disease causing allele at a particular gene on one chromosome and a normal allele at that gene on the other chromosome?
An individual with a recessive disease-causing allele on one chromosome and a normal allele on the other chromosome is referred to as a heterozygote for that gene. Since the disease is recessive, the normal allele typically masks the effects of the recessive allele, meaning the individual usually does not exhibit symptoms of the disease. However, they can still pass the recessive allele to their offspring.
Is cystic fibrosis carried on a dominant of recessive gene?
Cystic fibrosis is an autosomal recessive genetic disease.
