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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.
How do black people get cystic fibrosis?
The Same Way Any other person would get CF (Cystic Fibrosis), although it's Very Rare For African Americans to get it. Cystic Fibrosis is most common among Caucasians.
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
What kind of pathogen causes Cystic Fibrosis?
Cystic Fibrosis is caused by a genetic mutation in the CFTR gene. This mutation leads to the production of thick, sticky mucus in the lungs and other organs. It is not caused by a specific pathogen, but individuals with Cystic Fibrosis are more susceptible to respiratory infections.
How does a person becomes infected with cystic fibrosis?
The mother and father both have one mutated cystic fibrosis gene. If the child receives genes from the mother and the father that are both mutated, then the child will develop cystic fibrosis. If the child receives only one chromosome containing the CFTR(cystic fibrosis transport regulator: the gene that is mutated in cystic fibrosis), then the child will not develop CF. He will still have the CF gene, but it is a recessive trait, so you need two of these chromosomes that contain the mutated gene to develop the symptoms of CF and be affected by it. Use a punnet square if you still don't understand :)
Why do only white people get cystic fibrosis?
Most white Europeans do not get cystic fibrosis. There is, however, a greater occurence of the recessive gene responsible for cystic fibrosis in Caucasians and Ashkanezi Jews than other races.
Is cystic fibrosis an infectious disease?
Good Question. The answer is cystic fibrosis is not contagious, however, people with cystic fibrosis tend to carry bacterial infections that can cause serious issues to other people with CF, so infection control procedures should be used when two or more cystics are around each other. General population folks need not fear of getting cystic fibrosis from others - it's a hereditary disease.
Is cystic fibrosis controlled by a dominant allele or by a recessive allele?
It is controlled by a recessive allele. The gene encodes a chloride ion channel that is required to make sweat, mucus and a few other things. One copy of the gene is sufficient to prevent cystic fibrosis, and it is only when both copies are defective that the person would have the disease and show symptoms.
What other diseases are caused by cystic fibrosis?
Cystic fribrosis is an inherited disease of the secretory glands, including the glands which produce sweat and mucus.
Does a female or male more likely to inherit cystic fibrosis?
Cystic Fibrosis has an autosomal recessive pattern of inheritance, therefore, neither male nor female is more likely to inherit the disease. There are four different scenarios that can occur to "pass on" the disease. First, both parents have CF, and in this scenario all offspring would have CF as well. Second, One parent has CF and the other doesn't. This scenario has two subgroups. The parent that does not have CF could either be a carrier or have no CF gene. If the non-CF parent is a carrier then 3 out of 4 children would inherit CF. If the non-CF parent is not a carrier then 2 of 4 children would inherit it. Third, both parents are carriers, and in this scenario 2 of 4 offspring would inherit CF. Fourth, one parent is a carrier and the other is not. This would yield 1 out of 4 offspring inheriting CF. The genes for CF are located on non-sex chromosomes (autosomes) and therefore there is no correlation to Cystic Fibrosis and sex.
What type of genetic disorder occurs when the body produces abnormally thick mucus?
Cystic fibrosis is the genetic disorder that occurs when the body produces abnormally thick mucus. This condition affects the lungs, digestive system, and other organs, leading to recurrent infections and difficulty in breathing and digesting food.
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.
