6. Many families in the past wanted to keep their "royal blood" in the family. As a result, first cousins married each other. Why are children with recessively inherited disorders often more common to couples who are first cousins to one another?

6. Many families in the past wanted to keep their "royal blood" in the family. As a result, first cousins married each other. Why are children with recessively inherited disorders often more common to couples who are first cousins to one another?

Name: 6. Many families in the past wanted to keep their "royal blood" in th
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Description: 6. Many families in the past wanted to keep their "royal blood" in the family. As a result, first cousinsmarried each other. Why are children with recessively inherited disorders often more common tocouples who are first cousins to one another?

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter16: Human Genetics And The Human Genome

Section: Chapter Questions

Problem 8TYU

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7. The ability to roll your tongue (R) is dominant to lack of this ability (r). A. What is the genotype of a man who can roll his tongue if his father couldn’t? B. If a man who is heterozygous for tongue rolling marries a woman who is heterozygous, what would you predict for the genotypes and phenotypes of their children?
1. What are the hallmarks of an autosomal recessive trait? 2. What does consanguineous mean? Why is this concept especially important when discussing recessive genetic disorders?
1) Janet and her family members have attached earlobes (recessive trait). However, her maternal grandmother has unattached earlobes. What is the genotype of her maternal grandmother? _____________________ Janet’s maternal grandfather passed away ten years ago. What could have been his genotype?______________________________
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2)If an individual that is homozygous dominant for a gene has offspring with an individual that is homozygous recessive for that gene, which genotypes are possible for their offspring? choose all that apply A)homozygous dominant B)heterozygous C)homozygous recessive D)more information would be needed
1) Suppose thatt everyone in your family (bloodline) has attached earlobes. Do you know with certainty what your gentype is? a) Your spouse also has attached earlobes, but both your children have unattached earlobes. What is your genotype, and what is your spouse's genotype?
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2.In dogs, there is a hereditary deafness caused by a recessive allele, d. A kennel owner has a male dog that she wants to use for breeding purposes if possible. The dog can hear, but the owner is unsure of the genotype. She does a testcross (crosses it to a homozygous recessive dog), and two of the five offspring are deaf. This means that the male dog A.has the genotype DD B.has the genotype Dd C.is still of unknown genotype since there were offspring of both deaf and hearing phenotypes. D.has the genotype dd
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3. It’s very rare for someone with two X chromosomes to have DMD. Explain how a person with two X chromosomes could have the symptoms of DMD using what you know about inheritance and random mutation.
1. An albino man whose parents are both normal marries a woman ome of whose parents is normal and the other albino. She has an albino sister. The couple has a normal son. a.Is albinism a dominant or a recessive trait? Explain your answer B. Give genotypes of all the persons involved. C.The couple plans to have more kids. What is the probability of their second child being normal