You are a genetic councilor and your first patients of the day have arrived. They have both tested positive as "carriers" of the rare cystic fibrosis allele f. Therefore each of them have the genotype Ff. They want to have a family but are worried that they might have a child who is affected with this disorder (ff). What is the probability that if they have a family of three children, two will be affected with cystic fibrosis, but exactly one of them will be unaffected.

You are a genetic councilor and your first patients of the day have arrived. They have both tested positive as "carriers" of the rare cystic fibrosis allele f. Therefore each of them have the genotype Ff. They want to have a family but are worried that they might have a child who is affected with this disorder (ff). What is the probability that if they have a family of three children, two will be affected with cystic fibrosis, but exactly one of them will be unaffected.

Name: You are a genetic councilor and your first patients of the day have ar
Uploaded: 2024-03-20T06:42:55.000Z
Channel: Bartleby
Description: You are a genetic councilor and your first patients of the day have arrived. They have both tested positive as "carriers" of the rare cystic fibrosis allele f. Therefore each of them have the genotype Ff. They want to have a family but are worried th

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter16: Reproductive Technology, Genetic Testing, And Gene Therapy

Section: Chapter Questions

Problem 9QP: Cystic fibrosis is an autosomal disease that mainly affects the white population, and 1 in 20 whites...

See similar textbooks

Similar questions

As it turned out, one of the tallest Potsdam Guards had an unquenchable attraction to short women. During his tenure as guard, he had numerous clandestine affairs. In each case, children resulted. Subsequently, some of the childrenwho had no way of knowing that they were relatedmarried and had children of their own. Assume that two pairs of genes determine height. The genotype of the 7-foot-tall Potsdam Guard was A9A9B9B9, and the genotype of all of his 5-foot clandestine lovers was AABB. An A9 or B9 allele in the offspring each adds 6 inches to the base height of 5 feet conferred by the AABB genotype. a. What were the genotypes and phenotypes of all the F1 children? b. Diagram the cross between the F1 offspring, and give all possible genotypes and phenotypes of the F2 progeny
Imagine that you are a genetic counselor, and a couple planning to start a family comes to you for information. Charles wasmarried once before, and he and his first wife had a child withcystic fibrosis. The brother of his current wife, Elaine, died ofcystic fibrosis. What is the probability that Charles and Elainewill have a baby with cystic fibrosis? (Neither Charles, Elaine,nor their parents have cystic fibrosis.)
In pre-DNA fingerprint days, blood type was often used in paternity disputes to exclude possible fathers. If the man in question has type B blood, and the child has type A blood, and the mother has type AB blood, can the man be the father of the child? Group of answer choices Yes, but only if he is homozygous for the B allele No Yes, but only if he is heterozygous for the B allele Yes, but only if both of his parents were Type AB
In a paternity suit, a woman with type O blood claims that a man with type AB blood is the father of her type O baby. List the genetypes of the mom, man, and baby. Can the woman prove he is the father or can he is not? Why or why not? If the accused man was type A insyead of type AB, what would be his possible genotypes? Could the woman prove he is the father? Can the man prove he is not the father? Why or why not?
A couple who are about to get married learn from studying their family histories that, in both their families, theirunaffected grandparents had siblings with cystic fibrosis(a rare autosomal recessive disease).a. If the couple marries and has a child, what is theprobability that the child will have cystic fibrosis?b. If they have four children, what is the chance that thechildren will have the precise Mendelian ratio of 3:1 fornormal:cystic fibrosis?c. If their first child has cystic fibrosis, what is theprobability that their next three children will be normal?
If a Mother's genotype is IAi and her Daughter's genotype is ii and the mother claims a man who is type B as the father... a) Is that possible? Explain. b) The accused man can prove that both of his parents are type AB. Is it possible for him to be type B? If so, what is his genotype? Explain. d) Does the answer in part c change the answer in part b? Explain.
In a well-publicized paternity case, the following facts were determined: the mother, a beautiful, twice-convicted axe murderer, is blood type A. Her child, Lizzie, is type O and the alleged father, a mild-mannered felon convicted of check fraud, is type B. On the last day of the trial, another father – a missionary worker with blood type O is identified. Which of the two could be Lizzie’s father? Use the space below to support your conclusion. I am really confused with the queshtion and need help finding the answer and how to prove can somone explain the answer and show it in a punnet sqaure please
A healthy young couple, Charlie and Eva, both with families histories of cystic fibrosis, visits a genetic counselor before deciding whether to have children. The genetic counselor analyzed their pedigree to determine if they are carriers of the alleles for cystic fibrosis. On a sheet of paper, draw the given pedigree chart below and label each individual with the correct genotype.
In humans, there are three alleles for blood type: A, B, and O. A and B are codominant over O. A male with type AB blood and a female with type A blood have a child. The male’s parents both had type AB blood. The female’s mother had type A blood and her father had type B blood. What is the potential phenotype of the child? A. type A (25%), type B (25%), type AB (25%), type O (25%) B. type A (25%), type B (50%), type AB (25%) C. type A (25%), type B (25%), type AB (50%) D. type A (50%), type B (25%), type AB (25%)
When a white guinea pig is crossed to a yellow guinea pig, all the progeny are cream-colored. From a cross of two such F1’s, the F2 showed 32 white, 66 cream, and 30 yellow guinea pigs. How is this trait inherited? _______________ Identify the genotype of the white guinea pig. ________ Identify the genotype of the yellow guinea pig. ________ Identify the genotype of the cream-colored guinea pig. ________ Identify the genotypes and the corresponding phenotypes of the F2 progeny. Give the genotypic ratio. __________________ Give the phenotypic ratio. ___________________
A type of red-green colorblindness is inherited recessively on the X chromosome. A woman who is a carrier had children with a male that is not affected by the disease. Show your answers with the use of a Punnett square • What is the probability (% or likelihood) that a child is affected by the disease? • What is the probability (% or likelihood) that a son is a carrier? (Careful!) • Is there a chance that a girl of the couple is affected by the disease?
Below is a pedigree of a human genetic disease in which solid color indicates affected individuals. Assume that the disease is caused by a gene that can have the alleles A or a. a) Based on this pedigree, what is the most likely mode of inheritance? b) What is/are the possible genotype/s of person 1? c) What is/are the possible genotype (s) of person 4 ? Explain your answers.