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Can a person be a carrier for a genetic disease if neither or only one of their parents are carriers?
Wiki User
∙ 14y ago
i think it would be likely, but it would be extremely rare
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoThey catch the disease in the shower.
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Is it possible for a female to be a carrier of hemophilia?
Hemophilia normally refers to a genetic disorder that can be either inherited or the result of a spontaneous mutation. Since the genetic form of hemophilia is linked to a mutation on the X chromosome, males typically show the full symptoms while females with the mutation typically have somewhat mitigated symptoms or none at all. While the majority of the cases of genetic hemophilia are inherited, meaning that the genes were passed down from the the parents, approximately 1/3 of the cases are spontaneous mutations. The mutation occurs at conception, meaning that all genetic forms basically take effect at birth. Acquired hemophilia is a result of some other influence such as liver damage or specific medications. This form of hemophilia is neither inherited nor genetic. In short, technically anyone can get hemophilia. Genetic hemophilia is present at birth, and it tends to impact the health of males more than females, but can affect females too.
A child is diagnosed with a rare genetic disease neither parent has this disease how was the disorder inherited?
Recessive is carried by both parentsIn simplest terms, the disease is recessive, so two copies of the gene that cause it are necessary. Both parents have only one copy of the gene, so, they don't have it, but are carriers. A child gets half his or her genes from each parent. If the child gets the bad gene from each parent, the child will have the disease. There is a 25% chance of this happening with every child these parents have.
Assume that a particular genetic condition in a mammalian species causes an inability to digest starch This disorder occurs with equal frequency in males and females in most cases neither parent is af?
This genetic condition is likely an autosomal recessive trait since it occurs with equal frequency in males and females. If neither parent is affected, it suggests that both parents are carriers of the condition. In order for a child to be affected, they would need to inherit two copies of the recessive allele, one from each carrier parent.
What is the chance that any child will have the disease if two parent who are carriers of cystic fibrosis?
Let's do a Punnit Square. T T T TT TT t Tt Tt T is normal, and the little "t" is the recessive gene (which is being carried by one parent). Since one parent is recessive, you can see that there's a 50% chance that the offspring will have the recessive gene as well. However, note that without any straight "tt" result, there is a 0% chance that the offspring can express the Tay Sachs disorder.
When an offspring has a new genetic variation that it got from neither of its parents it is called a?
mutation
Is fibrosis preventable?
No, this is an inherited disease. If you are concerned about having a child with cf you can get genetic testing to see if you and your partner are carriers of the gene. If you and your partner are carriers - 25% chance If one of you has CF and the other is a carrier - 50% chance If you both have CF - baby will have CF If neither partner is a carrier - 0% chance
Is cystic fibrosis preventable?
No, this is an inherited disease. If you are concerned about having a child with cf you can get genetic testing to see if you and your partner are carriers of the gene. If you and your partner are carriers - 25% chance If one of you has CF and the other is a carrier - 50% chance If you both have CF - baby will have CF If neither partner is a carrier - 0% chance
2 A child is diagnosed with a rare genetic disease Neither parent has the disease How might the child have inherited the disorder?
Both parents are carriers of the recessive gene and if the child inherits that gene from both mother and father the child will have the disease even though the parents don't.
Is alkaptonuria caused by a recessive or dominant allele?
Phenylketonuria is an autosomal recessive genetic disorder. The enzyme phenylalanine hydroxylase is necessary to metabolize phenylalanie, but when this enzyme doesnt work, phenylaline accumulates and is detected in the urine. The disease is detected during pregnancy, and if treated right away the newborn can develop normally. However, if left untreated, the brain will not develop properly.
Why are sex-linked diseases more likely to affect sons of female carriers?
The son would automatically get the Y chromosome from the father. The son's X chromosome has to come from his mother. Females are XX, so he has a fifty-fifty chance of receiving the disease carrying gene. If he receives the disease carrying gene he will have the disease, if he doesn't then he will neither have the disease nor be a carrier. A daughter has to receive one X chromosome from her father and one from her mother. If the father doesn't have the disease, then the daughter cannot have it. If the mother is a carrier, then she has a fifty-fifty chance of being a carrier.
Sex-linked diseases are more likely to affect sons of female carriers because why?
The son would automatically get the Y chromosome from the father. The son's X chromosome has to come from his mother. Females are XX, so he has a fifty-fifty chance of receiving the disease carrying gene. If he receives the disease carrying gene he will have the disease, if he doesn't then he will neither have the disease nor be a carrier. A daughter has to receive one X chromosome from her father and one from her mother. If the father doesn't have the disease, then the daughter cannot have it. If the mother is a carrier, then she has a fifty-fifty chance of being a carrier.
What is the probability that an individual has one parent with huntington disease will also have Huntington disease?
25% will have the disease if both parents carry the gene. 50% will be carriers. 25% will be neither.
Explain why the parents of someone with cystic fibrosis do not show any symptoms?
In order to have a child with cystic fibrosis, both parents must be carriers (assuming neither of the parents actually have CF; then obviously they will have symptoms). In CF, a carrier has no symptoms, unlike sickle cell anemia, where a carrier will have mild symptoms of the disease. A carrier of CF has only one defected 7th chromosome, and the other unaffected one makes the CFTR gene work correctly. When both are defected, the result is the CF disease, and normal CFTR genes are impossible to make, causing the person to have the disease.
Is cystic fibrosis a dominant or co-dominant disorder?
It is autosomal recessive and it is not a disorder! Cystic Fibrosis is a disease.
Can hereditary diseases appear in a child despite the fact that neither parent shows any signs or symptoms of the disease?
Yes. It is possible to carry the gene(s) for a hereditary disease without the disease ever being expressed. The chance of a child inheriting the disease, rather than just being a carrier like its parents, depends on the disease and on whether one or both parents has the gene. A genetic counselor or clinical geneticist would be able to give the chances for a child having a specific disease.
Why can Cystic fibrosis be inherited even if neither parent has the disease?
Cystic Fibrosis is an example of a disease inherited as an autosomal recessive genetic disorder. Both parents of a baby who has Cystic Fibrosis have one abnormal recessive gene and one normal dominant gene and are therefore, Cystic Fibrosis carriers. Carriers are said to be heterozygous because they contain one normal copy of the gene and one abnormal copy. A baby who inherits cystic fibrosis has inherited the abnormal gene from both parents and is therefore said to be homozygous recessive.
Is it possible for a female to be a carrier of hemophilia?
Hemophilia normally refers to a genetic disorder that can be either inherited or the result of a spontaneous mutation. Since the genetic form of hemophilia is linked to a mutation on the X chromosome, males typically show the full symptoms while females with the mutation typically have somewhat mitigated symptoms or none at all. While the majority of the cases of genetic hemophilia are inherited, meaning that the genes were passed down from the the parents, approximately 1/3 of the cases are spontaneous mutations. The mutation occurs at conception, meaning that all genetic forms basically take effect at birth. Acquired hemophilia is a result of some other influence such as liver damage or specific medications. This form of hemophilia is neither inherited nor genetic. In short, technically anyone can get hemophilia. Genetic hemophilia is present at birth, and it tends to impact the health of males more than females, but can affect females too.
