Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN: 9781305251052
Author: Michael Cummings
Publisher: Cengage Learning
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Chapter 16, Problem 16QP
A couple has had a child born with neurofibromatosis. They come to your genetic counseling office for help. After taking an extensive family history, you determine that there is no history of this disease on either side of the family. The couple wants to have another child and wants to be advised about the risks of that child having neurofibromatosis. What advice do you give them?
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As a genetic counselor, you inform Susan and John that a blood test for cystic fibrosis is available. would you recommend generic testing for Susan and John?
A woman knows that her mother is a carrier of Kartagener’s syndrome (an autosomal recessive disorder). The woman does not know if either she or her husband are carriers. The couple wants to have a child, but is worried about whether or not they could have a child with Kartagener’s syndrome. Should the couple seek the advice of a genetic counselor? In other words, is there a chance they could have an affected child? If there is a chance, please make sure your answer includes the specific parental genotypes necessary to make this possible.
A couple is planning a family, but since each has a brother having the sickle-cell disorder, they are worried that their kids might develop the disorder too. Neither of them nor their respective parents have the disorder. Which of the following will be your smartest advice as a genetic counsellor?
One of four of their children can be expected to have sickle cell.
It is possible that none of their kids will have the disorder, but tests should be carried out on both of them to confirm.
All of their children will have sickle-cell disorder.
There is no chance of any of their kids having sickle cell.
Chapter 16 Solutions
Human Heredity: Principles and Issues (MindTap Course List)
Ch. 16.5 - Should fertility clinics be required to disclose...Ch. 16.5 - Prob. 2EGCh. 16 - Would ISCI be an option? Why or why not? Jan, a...Ch. 16 - Jan is concerned about using ART. She wants to be...Ch. 16 - List the common infertility problems in women....Ch. 16 - Prob. 2QPCh. 16 - Prob. 3QPCh. 16 - What is the difference between gamete...Ch. 16 - Why should women consider collecting and freezing...Ch. 16 - Prob. 6QP
Ch. 16 - Researchers are learning how to transfer...Ch. 16 - Prob. 8QPCh. 16 - Cystic fibrosis is an autosomal disease that...Ch. 16 - Prob. 10QPCh. 16 - Gene therapy involves: a. the introduction of...Ch. 16 - In selecting target cells to receive a transferred...Ch. 16 - The prospect of using gene therapy to alleviate...Ch. 16 - Is gene transfer a form of eugenics? Is it...Ch. 16 - A couple who wishes to have children visits you, a...Ch. 16 - A couple has had a child born with...Ch. 16 - You are a genetic counselor, and your patient has...Ch. 16 - Prob. 18QP
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- As a physician, you deliver a baby with protruding heels and clenched fists with the second and fifth fingers over-lapping the third and fourth fingers. a. What genetic disorder do you suspect the baby has? b. How do you confirm your suspicion?arrow_forwardA student has difficulty reading the blackboard while sitting in the last row. What could be the defect the child is suffering from? How can it be corrected?arrow_forwardCreate a hypothetical person and situation as a real life example to illustrate your position. Who is this person? How old is this person? What chromosomal abnormalities does this person have? How does genetic testing and counseling make this person’s life better or worse? Ultimately, should your hypothetical person seek genetic counseling?arrow_forward
- How did you identify Guinevere's genotype? is that trait recessive or dominant? What if Mike is type B, will it be possible that Guinevere's would still be type o?arrow_forwardImagine 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.)arrow_forwardHow can you treatment for the genetic disorders by using gene therapy? Please answer at your own words, please..arrow_forward
- Many genetic counselors will not provide presymptomatic genetic testing for Huntington disease to people below the age of 18. Why are there concerns about offering this and many other genetic tests to minors? What types of presymptomatic genetic testing might be appropriate for minors?arrow_forwardwhat is the probability that a couple (both heterozygous for the same recessive mutation) will have two children with the disease if the couple plans to have four children in total?arrow_forwardAs a genetic counselor, you are asked to assess the risk for a couple with a family history of familial adenomatous polyposis (FAP) who are thinking about having children. Neither the husband nor the wife has colorectal cancer, but the husband has a sister with FAP. What is the probability that this couple will have a child with FAP? Are there any tests that you could recommend to help in this assessment?arrow_forward
- A young lady requested pre-marital genetic counselling because her sister had died in infancy of gangliosidosis, an autosomal recessive disease. What is the risk that this young lady has similarly affected offspring? What advice should be given?arrow_forwardPeople with polydactyly have more than five fingers or toes on their hands or feet. Polydactyly results from an autosomal dominant genetic disorder. Draw a pedigree for a family with polydactyly, using the following information: Zack has polydactyly but his wife, Zoe does not. Zack and Zoe’s daughter Yolanda has polydactyly but their son Yogi does not. Yolanda has two children with her husband, Xavier, who does not have polydactyly: Wilma, who is normal and Wade, who has polydactyly. Use your pedigree to determine what is Zoe's genotype. A) DD B)dd C)Ddarrow_forwardWhat is the purpose of doing a pedigree analysis?arrow_forward
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