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Can a person be a carrier for a genetic disease if neither or only one of their parents are carriers?
Yes, it is possible for a person to be a carrier for a genetic disease even if neither of their parents are carriers. This can occur if the person has a new mutation in the gene associated with the disease. Carriers have one copy of the mutated gene, which they can pass on to their children.
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A child is diagnosed with a rare genetic disease neither parent has this disease how was the disorder inherited?
The child likely inherited the rare genetic disease from both parents who were carriers of the disease-causing gene. In some cases, carriers do not exhibit symptoms of the disease themselves, but can pass on the gene to their offspring. The child ended up inheriting two copies of the faulty gene, one from each parent, resulting in the manifestation of the rare genetic disease.
Is it possible for a female to be a carrier of hemophilia?
Yes, females can be carriers of hemophilia if they have an affected gene for hemophilia on one of their X chromosomes. They may not show symptoms of the disorder themselves, but they can pass the gene to their children.
Can a baby be born with a CF gene if neither parent has the gene?
No, a baby cannot be born with a CF gene if neither parent has the gene. Cystic fibrosis is an autosomal recessive genetic disorder, meaning both parents must be carriers of the mutated CF gene in order to have a child with the condition.
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.
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.
A child is diagnosed with a rare genetic disease neither parent has this disease how was the disorder inherited?
The child likely inherited the rare genetic disease from both parents who were carriers of the disease-causing gene. In some cases, carriers do not exhibit symptoms of the disease themselves, but can pass on the gene to their offspring. The child ended up inheriting two copies of the faulty gene, one from each parent, resulting in the manifestation of the rare genetic disease.
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.
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.
Is alkaptonuria caused by a recessive or dominant allele?
Alkaptonuria is caused by a recessive allele. It is an autosomal recessive disorder, meaning that an individual needs to inherit two copies of the defective gene (one from each parent) in order to have the condition.
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.
Is it possible for a female to be a carrier of hemophilia?
Yes, females can be carriers of hemophilia if they have an affected gene for hemophilia on one of their X chromosomes. They may not show symptoms of the disorder themselves, but they can pass the gene to their children.
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.
