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What is the chance that any child will have the disease if two parent who are carriers of cystic fibrosis?
Wiki User
∙ 6y ago
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.
Wiki User
∙ 15y ago
Wiki User
∙ 14y agothis is a trickey one to explain
either the child has
one non cf gene (from the mother) + one non cf gene (from the father) = a non carrier child (a child that doesnt carry the cf gene)
OR
one non cf gene (from the mother) + one cf gene (from the father) = a carrier child (a child that carry's the cf gene but doesnt have cf)
OR
one cf gene (from the mother) + one non cf gene (from the father) = a carrier child (a child that carry's the cf gene but doesnt have cf)
OR
one cf gene (from the mother) + one cf gene (from the father) = a cf child (a child that carry's both copies of the cf gene and does have cf)
so to answer your question there is a 1 in 3 chance
Wiki User
∙ 12y agoThe chances are 1/4 for a child having the disease, 1/2 for a child being a carrier, and 1/4 for a child neither having the disease or being a carrier.
Wiki User
∙ 9y ago25% will have the disease if both parents carry the gene. 50% will be carriers. 25% will be neither.
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What does heterozygous have to do with cystic fibrosis?
people who are heterozygous for cystic fibrosis are not directly affected by the disease (although there is some evidence they have more chance of getting Asama) however they do still carry the gene for CF (they are carriers) this means if they have kids with another carrier they have a 25% chance of having a CF positive child (out of four one non effected, two carriers, and one diseased)
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.
What kind of pathogen causes Cystic Fibrosis?
Cystic fibrosis is not an infectious disease but a genetic disease, provoked by mutations fo the CFTR gene, mainly inherited.
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 an inherited disease of the mucus and sweat glands?
cystic fibrosis
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.
Is it possible for a mother to have two kids with different father be born with cystic fibrosis?
Depends. If your mother has cystic fibrosis and your father is a carrier, there is a 50% chance that any of their children will have cystic fibrosis. If the father is not a carrier, no children will have cystic fibrosis, but they will all be carriers.
To be a cystic fibrosis carrier do your parents have to have a cystics fibrosis gene?
Yes, since the disease is a recessive inherted trait BOTH parents must carry the gene but will not have the disease itself. Approximately 30,000 people in the United States have cystic fibrosis. An additional ten million more-or about one in every 31 Americans-are carriers of the defective CF gene, but do not have the disease. The disease is most common in Caucasians, but it can affect all races.
A couple who are both carriers of the gene for cystic fibrosis have two children who have cystic fibrosis What is the probability that their next child will be phenotypically normal?
If both parents are carriers on cystic fibrosis, just because two children may have the disease it doesn't mean that say,a further 3 children in future will be "normal". Inheriting genes is like a lottery. I can say though that because cystic fibrosis is recessive, every offspring born under carriers will always have a 75% chance of being phenotypically normal.
Is cystic fibrosis a viral disease?
No. Cystic fibrosis is a genetic disease.
Is this true Cystic fibrosis is a viral disease?
No. Cystic fibrosis is a genetic disease.
What types of disease is cystic fibrosis?
Cystic fibrosis is an autosomal recessive genetic disease. A+ neuromuscular disease
What does heterozygous have to do with cystic fibrosis?
people who are heterozygous for cystic fibrosis are not directly affected by the disease (although there is some evidence they have more chance of getting Asama) however they do still carry the gene for CF (they are carriers) this means if they have kids with another carrier they have a 25% chance of having a CF positive child (out of four one non effected, two carriers, and one diseased)
Is cystic fibrosis infectious or nonifectious?
Cystic fibrosis is not an infectious disease, it is a genetic disease.
How do you start a topic sentence if its about Cystic fibrosis?
What is cystic fibrosis? Cystic fibrosis is a life threatening disease.
Is cystic fibrosis common?
Cystic fibrosis is the most common life threatening disease in the UKOne in 25 people have the cystic fibrosis gene in them (but may not have the disease). Most people aren't even aware that they carry the gene. If two people who have the gene reproduce, the odds that they have a child with cystic fibrosis is 1 in 4. The chance that they will have a child who carries the gene but doesn't have the disease is 2 in 4 (half). The chance that they have a child who does not have the disease or carry the gene is 1 in 4.
Is cystic fibrosis caused by a virus?
No. Cystic fibrosis is a genetic disease.
