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No, if one parent is a carrier of galactosemia and the other parent is not, the child has a 50% chance of being a carrier as well. It only requires one parent to pass on the gene for the child to be a carrier.

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1y ago

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What is the probability that the next two children will both be affected with galactosemia?

The probability that a child is affected with galactosemia is 1/40,000. The probability that both children are affected would be (1/40,000) * (1/40,000) = 1/1,600,000,000.


What are is the percentages of a child not having cystic fibrosis with parents who both have the trait?

If both parents are just carriers of the gene that causes CF then there is a 75% chance that the child will not have CF. To break it down farther... 25% chance that they will have CF. 50% that they will be a carrier. 25% that they will have two normal genes.


What happen when both parents Carrie a ressavie of gene?

If both parents carry a recessive gene, there is a 25% chance that their child will inherit two copies of the recessive gene, leading to the expressed trait or condition. There is a 50% chance the child will inherit one copy of the gene and be a carrier like the parents, and a 25% chance the child will not inherit the gene at all. This is based on the principles of Mendelian genetics.


How can a child with cystic fibrosis have two parents that do not have cystic fibrosis?

The parents will both have a specific gene defect. If they do there is then a 1 in 4 chance of them having a child with cf. so if you are considering having children you should have a blood test to find out if you are a carrier of the gene causing cf. hope that helps.


What are the chances of passing on the CF gene?

If the spouse he or she has the gene needed to pass on cystic fibrosis, then yes it will have children with cystic fibrosis. If the spouse does not have that gene then the child will not have cystic fbrosis but will be a gene carrier of cystic fibrosis.

Related Questions

Are there carriers for albinism?

Yes. If either parent is a carrier of the gene that causes albinism then their child becomes a carrier as well. It is only when both parents have the gene for albinism that the child is born with this disorder.


What are the chances of two parents who carry the gene for albinism an autosomal recessive disorder having a child without albinism?

If both parents carry the gene for albinism, which is an autosomal recessive disorder, there is a 25% chance their child will be affected by albinism, a 50% chance the child will be a carrier like the parents, and a 25% chance the child will neither have albinism nor be a carrier. Therefore, there is a 75% chance that their child will not have albinism, either being a carrier or completely unaffected.


What is the probability that the next two children will both be affected with galactosemia?

The probability that a child is affected with galactosemia is 1/40,000. The probability that both children are affected would be (1/40,000) * (1/40,000) = 1/1,600,000,000.


What are is the percentages of a child not having cystic fibrosis with parents who both have the trait?

If both parents are just carriers of the gene that causes CF then there is a 75% chance that the child will not have CF. To break it down farther... 25% chance that they will have CF. 50% that they will be a carrier. 25% that they will have two normal genes.


Are there any other ways to get cystic fibrosis?

No, it is a hereditary disease meaning it's only in the family and oth parents have to hold the gene for the child to get CF, you have to be born with CF you can't get it like the flu. Say the mother was a carrier of the CF gene but the Dad is not, the child would only be a carrier, but if both parents are then it's likely the child will have CF


Sickle-cell anemia is a disease passed by autosomal recessive inheritance. What is the likelihood that a person who has two parents with the disease will be a carrier of the defective gene?

If both parents have sickle-cell anemia, their child will inherit one copy of the defective gene from each parent, making them a carrier. Thus, the likelihood that a person who has two parents with the disease will be a carrier of the defective gene is 100%.


A child with both parents dead are called?

A child with both parents dead


What happen when both parents Carrie a ressavie of gene?

If both parents carry a recessive gene, there is a 25% chance that their child will inherit two copies of the recessive gene, leading to the expressed trait or condition. There is a 50% chance the child will inherit one copy of the gene and be a carrier like the parents, and a 25% chance the child will not inherit the gene at all. This is based on the principles of Mendelian genetics.


If the father has sickle cell trait and the mother doesnt will their children have sickle cell trait?

No. The trait that causes sickle cell anemia is a recessive trait, which means that if both parents have the trait, there is a 1/4 chance their child will have it. The child can be a carrier however and not display symptoms, but there is no way for a child to get sickle cell from parents that don't have the gene.


Do both parents have to be present when applying for a child's passport?

No, both parents do not have to be present when applying for a child's passport.


Can you prevent cystic fibrosis?

The only way to prevent CF is to get both parents tested before conceiving then making the difficult decision to go ahead and conceive (if both tested as a carrier of the CF gene). If both parents are carriers its a 25% chance of the child having CF.


What would a genetic counselor tell parents who had cystic fibrosis or were carries of the cystic fibrosis about the chances of their children having cystic fibrosis?

If both parents are carriers then the child has a 25% chance of having cystic fibrosis. If one parent has CF and the other the other was just a carrier then the child has a 50% chance of having CF. If one parent has CF and the other has two normal genes then there is no chance of the child having CF. If one parent is a carrier and the other has two normal genes then there is no chance of the child having CF. If both parents have CF then there is a 100% chance that the child will also have CF.