Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 14, Problem 3TYU
A man has six fingers on each hand and six toes on each foot. His wife and their daughter have thc normal numbcr of digits. Remember that extra digits is a dominant trait. What fraction of this couple's children would be expected to have extra digits?
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Unattached earlobes (E) are dominant over attached earlobes (e) [Figure (a) and (b)]. If a woman with unattached earlobes and a man with attached earlobes have children, what percentage of their children has the possibility of having unattached earlobes if the mother is homozygous for the trait?
Heather has “short fingers” (brachydactyly).She has two older brothers who are identical twins; both have short fingers. Heather’s two younger sisters have normal fingers. Heather’s mother has normal fingers, and her father has short fingers. Heather’s paternal grandmother has short fingers; her paternal grandfather, who is now deceased, had normal fingers. Both of Heather’s maternal grandparents have normal fingers. Heather marries Tom, who has normal fingers; they adopt a son named Jeffrey who has normal fingers. Jeffrey’s biological parents both have normal fingers. After adopting Jeffrey, Heather and Tom produce two children: an older daughter with short fingers and a younger son with normal fingers. What is the most likely mode of inheritance for short fingers in this family? If Heather and Tom had another biological child, what is the probability that this child will have short fingers? Try drawing the pedigree. However, it is a bit challenging to fit in all the…
Chapter 14 Solutions
Campbell Biology
Ch. 14.1 - DRAW IT Pea plants heterozygous for flower...Ch. 14.1 - WHAT IF? List all gametes that could be made by a...Ch. 14.1 - MAKE CONNECTIONS In some pea plant crosses, the...Ch. 14.2 - Prob. 1CCCh. 14.2 - Two organisms, with genotypcs BbDD and BBDd, are...Ch. 14.2 - WHAT IF? Three characters (flower color, seed...Ch. 14.3 - What two properties, one structural and one...Ch. 14.3 - If a man with type AB blood marries a woman with...Ch. 14.3 - WHAT IF? A rooster with gray feathers and a hen...Ch. 14.4 - Prob. 1CC
Ch. 14.4 - Prob. 2CCCh. 14.4 - Prob. 3CCCh. 14.4 - MAKE CONNECTIONS In Table 14.1, note the...Ch. 14 - When Mendel did crosses of true-breeding purple-...Ch. 14 - DRAW IT Redraw the Punnett Square on The right...Ch. 14 - Inheritance patterns are often more complex than...Ch. 14 - Both members of a couple know that they are...Ch. 14 - Prob. 1TYUCh. 14 - A man with type A blood marries a woman with type...Ch. 14 - A man has six fingers on each hand and six toes on...Ch. 14 - Prob. 4TYUCh. 14 - Flower position, stem length, and seed shape are...Ch. 14 - Hemochromatosis is an inherited disease caused by...Ch. 14 - The genotype of F1, individuals in a tetrahybrid...Ch. 14 - What is the probability that each of thc following...Ch. 14 - Prob. 9TYUCh. 14 - Prob. 10TYUCh. 14 - In tigers, a recessive allele of a particular gene...Ch. 14 - In maize (com) plants,a dominant allele I inhibits...Ch. 14 - The pedigree belowtraces the inheritance of...Ch. 14 - Imagine that you are a genetic counselor, and a...Ch. 14 - EVOLUTION CONNECTION Over the past half century,...Ch. 14 - SCIENTIFIC INQUIRY You are handed a mystery pea...Ch. 14 - Prob. 17TYUCh. 14 - SYNTHESIZE YOUR KNOWLEDGE Just for fun, imagine...
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- Joan was born with six toes on each foot, a dominant trait called polydactyly. Two of her five siblings and her mother, but not her father, also has extra digits. What is Joan's genotype for the number-of-digits character?arrow_forwardA child born with six fingers on each hand (polydactyly), had the extra fingers removed by surgery shortly after birth. Polydactyly occurs only in persons who have at least one polydactylous parent. Will the removal of extra fingers mean that this child will not have polydactylous children? Why?arrow_forward1) 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?arrow_forward
- Wooly hair is a rare dominant trait found in people of Scandinavian descent in which the hair resembles the wool of a sheep. Amale with wooly hair, who has a mother with straight hair, movesto an island that is inhabited by people who are not of Scandinavian descent. Assuming that no other Scandinavians immigrate tothe island, what is the probability that a great-grandchild of thismale will have wooly hair? (Hint: You may want to draw a pedigree to help you figure this out.) If this wooly-haired male haseight great-grandchildren, what is the probability that one out ofeight will have wooly hair?arrow_forwardWhy do unrelated children with a disorder such as Down syndrome resemble each other more closely than they do their siblings?arrow_forwardIf your father were diagnosed with an inherited disease that develops around the age of 50, would you want to be tested to find out whether you would develop this disease? If so, when would you want to be tested? As a teenager or sometime in your 40s? If not, would you have children?arrow_forward
- Indicate the nature of the trait and type of inheritance involved in each of the following situations. (a) Children who exhibit this trait have at least one parent who exhibits the same trait. (b) Children exhibit this trait even though neither parent does. (c) The trait is expressed more commonly in sons than indaughters. (d) Tongue-rolling is expressed equally in both daughters and sons.arrow_forwardBoth parents love strawberry blonde hair but hate the fact they can touch their noses with their tongues. What are the odds their child will be a strawberry blonde non-nose touching individual?arrow_forwardJoanna has “short fingers” (brachydactyly). She has two older brothers who are identical twins; both have short fingers. Joanna’s two younger sisters have normal fingers. Joanna’s mother has normal fingers, and her father has short fingers. Joanna’s paternal grandmother (her father’s mother) has short fingers; her paternal grandfather (her father’s father), who is now deceased, had normal fingers. Both of Joanna’s maternal grandparents (her mother’s parents) have normal fingers. Joanna marries Tom, who has normal fingers; they adopt a son named Bill who has normal fingers. Bill’s biological parents both have normal fingers. After adopting Bill, Joanna and Tom produce two children: an older daughter with short fingers and a younger son with normal fingers. a. Using standard symbols and labels, draw a pedigree illustrating the inheritance of short fingers in Joanna’s familyarrow_forward
- Joanna has “short fingers” (brachydactyly). She has two older brothers who are identical twins; both have short fingers. Joanna’s two younger sisters have normal fingers. Joanna’s mother has normal fingers, and her father has short fingers. Joanna’s paternal grandmother (her father’s mother) has short fingers; her paternal grandfather (her father’s father), who is now deceased, had normal fingers. Both of Joanna’s maternal grandparents (her mother’s parents) have normal fingers. Joanna marries Tom, who has normal fingers; they adopt a son named Bill who has normal fingers. Bill’s biological parents both have normal fingers. After adopting Bill, Joanna and Tom produce two children: an older daughter with short fingers and a younger son with normal fingers. a. What is the most likely mode of inheritance for short fingers in this family? b. If Joanna and Tom have another biological child, what is the probability (based on your answer to part b) that this child will have short fingers?arrow_forwardHuntington’s disease, is an incurable neurodegenerative genetic disorder that affectsmuscle coordination and some cognitive functions, typically becoming noticeable inmiddle age. It results from an autosomal dominant gene (H) and there are no carriers ofthe disease. Two parents with Huntington’s disease have an affected child. What is theprobability that their next child will be an unaffected girl if they are not double-dominant?arrow_forwardHaving dimples (D) is dominant over not having dimples (d). A dimpled woman (whose father had no dimples andwhose mother did have dimples) marries a man whose mother had no dimples, whose father had no dimples, andwhose grandparents on his father’s side did have dimples!arrow_forward
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