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What is the risk in each pregnancy of having a child with cystic fibrosis?
Wiki User
∙ 12y ago
By "another pregnancy", I assume that the parents have had one child with cystic fibrosis. As cystic fibrosis is recessive and neither parent suffers from it, they must both be carriers. That means the chances of the next baby having CF is 25%, or a one in four chance. Assuming both parents have one CF and one non-CF gene, the combinations work out: non-CF x non-CF (normal) non-CF x CF (carrier) CF x non-CF (carrier) CF x CF (cystic fibrosis sufferer) Therefore their chances of having a: normal child = 25% child who is a CF carrier = 50% child who suffers from CF = 25%
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoCystic fibrosis is an autosomal recessive genetic disease. This means that each parent would have to be a carrier of a CF mutation. With any pregnancy the parents would have a one in four, or 25%, chance that the child would have cystic fibrosis.
Wiki User
∙ 12y agoIn the UK around 1 in every 25 caucasian people has the CF gene. It is less common in people from other ethnic groups.
In order for the child to have cystic fibrosis both the mother and father must have the CF gene. For a couple who both have the gene, there is a 1 in 4 chance that the child will have CF (i.e. the child will have two copies of the CF gene in order to have CF), a 1 in 2 chance that the child will be a carrier of CF (i.e. have one copy of the CF gene but will have no symptoms at all of CF) and a 1 in 4 chance that the child will be CF-gene free. These odds will be the same for each pregnancy, regardless of the couple's children already born with/without CF.
There are many 'mutations' of the CF gene that have been found, some more common than others. If you have CF in the family, or are worried about having a child with CF, it is possible to have screening to see if you have one of the more common forms of the CF gene.
Wiki User
∙ 14y agoIn order for your child to have CF, both parents have to be carriers. If they are, the child has a 1 in 4 chance of having CF.
Wiki User
∙ 12y ago1 in 4 if both parents are carriers. If only one parent has it, then it can't be passed on.
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What is the probability of a child having cystic fibrosis if one of her parents was homozygous dominant and the other was a carrier for cystic fibrosis?
Assuming that each parent is a carrier for cystic fibrosis (has the genotype Ff), the probability that their second child will develop cystic fibrosis is one fourth. The probability doesn't change with the number of children they have. For each pregnancy, the chance that the child will have cystic fibrosis (have the genotype ff) is exactly the same.
What is the genotype of an individual that is not affected with cystic fibrosis?
Let's call the gene "C." Capital C means no cystic fibrosis; lower c means cystic fibrosis, since it is a recessive gene. CC is a person who does not have cystic fibrosis and also is not a carrier. Cc indicated a carrier. cc shows a person with cystic fibrosis. In order for a child to have cystic fibrosis, its parents must be: 1. cc and cc (both have cystic fibrosis, so every child will as well.) 2. Cc and Cc (both carriers; 25% chance of having a child with cystic fibrosis) 3. Cc and cc (one parent is a carrier and one has cystic fibrosis; there is a 50% chance that the children will have cystic fibrosis.)
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.
What are the chances of a normal person and a carrier for cystic fibrosis have a kid with cystic fibrosis?
Zero. Cystic fibrosis is an autosomal recessive disease. This means that both parents must carry a mutated gene and have a 1 in 4 (25%) chance of having a child with CF.
A husband and wife have a son with cystic fibrosis Their second child a daughter does not Prepare a pedigree for this family?
To have cystic fibrosis both parents have to be a carrier. Each parent passes on one of their genes to their children; they each have one healthy and one cystic fibrosis gene. The child with cystic fibrosis receives a cystic fibrosis gene from each parent. The other child has at least one healthy gene if she does not have cystic fibrosis, though she could be a carrier. hope it would help
How disorder is inherited cystic fibrosis?
Cystic Fibrosis, is a recessive disease (meaning that both parents must be carriers of the cystic fibrosis gene, for the offspring to have a chance of being born with it). A child has a 25% chance (1/4) of being born with Cystic Fibrosis.
What is the probability of two healthy people where one is a carrier being parents to a child born with cystic fibrosis?
If only one person is a carrier of cystic fibrosis than there is no chance of having a child with it. Both parents have to be carriers and even then there is only a 25% chance. If only one carries than there is a 50% chance that their children will carry but will not have cystic fibrosis.
Will a child with cystic fibrosis have liver problems?
No-False
How can you get cystic fibrosis?
For a baby to be born with Cystic Fibrosis, both parents must be carriers of the faulty CF gene. Where both parents carry the faulty gene, each child has a one in four chance of having CF, a two in four chance of being a carrier and a one in four chance of not having any CF genes.
Can a child with cystic fibrosis play the flute instrument?
of curse
Can you adopt a child if you have cystic fibrosis?
if the adopting agency believes you are capable of looking after a child
Can Cystic fibrosis be prevented?
Cystic Fibrosis cannot be prevented. It is an inherited disease, so there is no possible way to prevent something inherited. One parent will be a carrier and so will the other parent, therefore resulting in the child having CF.
