Concepts of Genetics (12th Edition)
12th Edition
ISBN: 9780134604718
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino, Darrell Killian
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 22PDQ
Draw all possible conclusions concerning the mode of inheritance of the trait portrayed in each of the following limited pedigrees. (Each of the four cases is based on a different trait.)
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Draw all possible conclusions concerning the mode of inheritanceof the trait expressed in each of the following limited pedigrees.(Each case is based on a different trait.)
In each of the following pedigrees (A, B) by inspection, determine the mode of inheritance involved. Indicate the possible genotypes of all individuals in all the pedigrees.
In each of the following pedigrees (C, D) by inspection, determine the mode of inheritance involved. Indicate the possible genotypes of all individuals in all the pedigrees.
Chapter 3 Solutions
Concepts of Genetics (12th Edition)
Ch. 3 - Pigeons may exhibit a checkered or plain color...Ch. 3 - Considering the Mendelian traits round versus...Ch. 3 - Using the forked-line, or branch diagram, method,...Ch. 3 - In one of Mendels dihybrid crosses, he observed...Ch. 3 - The following pedigree is for myopia...Ch. 3 - If they seek genetic counseling, what issues would...Ch. 3 - If you were in Thomass position, would you want to...Ch. 3 - If Thomas tests positive for the HD allele, should...Ch. 3 - HOW DO WE KNOW? In this chapter, we focused on the...Ch. 3 - CONCEPT QUESTION Review the Chapter Concepts list...
Ch. 3 - Albinism in humans is inherited as a simple...Ch. 3 - Which of Mendels postulates are illustrated by the...Ch. 3 - Discuss how Mendels monohybrid results served as...Ch. 3 - What advantages were provided by Mendels choice of...Ch. 3 - Mendel crossed peas having round seeds and yellow...Ch. 3 - Based on the preceding cross, what is the...Ch. 3 - Which of Mendels postulates can only be...Ch. 3 - In a cross between a black and a white guinea pig,...Ch. 3 - What is the basis for homology among chromosomes?Ch. 3 - In Drosophila, gray body color is dominant to...Ch. 3 - How many different types of gametes can be formed...Ch. 3 - Mendel crossed peas having green seeds with peas...Ch. 3 - In a study of black guinea pigs and white guinea...Ch. 3 - Mendel crossed peas having round green seeds with...Ch. 3 - Prob. 17PDQCh. 3 - The following are F2 results of two of Mendels...Ch. 3 - In assessing data that fell into two phenotypic...Ch. 3 - Prob. 20PDQCh. 3 - Consider the following pedigree. Predict the mode...Ch. 3 - Draw all possible conclusions concerning the mode...Ch. 3 - For decades scientists have been perplexed by...Ch. 3 - A wrongful birth case was recently brought before...Ch. 3 - TaySachs disease (TSD) is an inborn error of...Ch. 3 - Datura stramonium (the Jimsonweed) expresses...Ch. 3 - The wild-type (normal) fruit fly, Drosophila...Ch. 3 - To assess Mendels law of segregation using...Ch. 3 - Albinism, caused by a mutational disruption in...Ch. 3 - (a) Assuming that Migaloos albinism is caused by a...
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- Consider the two traits: Blood Type B (Parents and Child with Blood Type B, Grandparents unknown) and Hanging Earlobe (Parents and Child with Blood Type B, Grandparents unknown). From this, create a 3-generation pedigree chart (starting from grandparents' generation).What is a possible analysis regarding the mode of inheritance of the observed traits?arrow_forwardPlease consider the following pedigree. Assume that people who marry in to the family do not carry the allele unless otherwise indicated. Assume complete penetrance. image attached a. Is it possible for the inheritance pattern for the trait illustrated in this pedigree to be as a result of each of the following? Answer yes or no. (i) an autosomal recessive allele (AR)(ii) an autosomal dominant allele (AD)(iii) a X-linked recessive allele (XR)(iv) a X-linked dominant allele (XD) b. Provide a set of parents that definitively supports your answers in (a).arrow_forwardLorenzo has a double row of eyelashes (MIM 126300) which he inherited from his mother as a dominant trait. His maternal grandfather is the only other relative to have it. Fatima, who has normal eyelashes, marries Lorenzo. The first child, Nicola (girl) has normal eyelashes. Now Fatima is pregnant again and hopes for a child with double eyelashes. What chance does the child have of inheriting double eyelashes? Draw a pedigree of this family.arrow_forward
- A prospective father has two dominant traits dependent on single autosomal genes, cataract (an eye abnormality), which he inherited from his mother, and polydactyly (extra fingers and/or toes), which he inherited from his father. If the loci for these two traits are very closely linked, which of the following possibilities would the man's child be more likely to have (assume his partner is unaffected by either condition): Select one: either cataract or polydactyly both cataract and polydactyly neither traitarrow_forwardAlong with the trait in the pedigree, individual IV-6 and the woman are also both heterozygous for the autosomal dominant allele causing Huntington's disease. If they have a child, what is the probability that it will be affected by at least one of these traits? Remember to include both the trait in the pedigree and Huntington's disease in your calculations. Enter your answer to two decimal places (e.g., 0.55).arrow_forwardThe pedigree below tracks the inheritance of a genetic disorder through a family's generation. Determine the probable inheritance mode for the trait shown in the affected individual (the shaded symbols) by answering the following questions. I II 2 3 4 5 7 III 2 3 6 7 8 5 (i) Based on the pedigree, Y-linked inheritance can be excluded at a glance. Give your reason. (ii) What TWO (2) other modes of inheritance can be definitely excluded? Explain your answer. Of the remaining modes of inheritance, which is the most likely? Which is less likely? Explain your answers. (ii)arrow_forward
- For this pedigree, give the most likely mode of inheritance, assuming that the trait is rare. For the pedigree, what is the probability that III-4 and III-5 will have a boy AND he will be affected?arrow_forwardPlease consider the following pedigree. Assume that people who marry in to the family do not carry the allele unless otherwise indicated. Assume complete penetrance. I II 5 6 III 6 IV 1 2 a. Is it possible for the inheritance pattern for the trait illustrated in this pedigree to be as a result of each of the following? Answer yes or no. (i) an autosomal recessive allele (AR) (ii) an autosomal dominant allele (AD) (iii) a X-linked recessive allele (XR) (iv) a X-linked dominant allele (XD) b. Provide a genotype for individual III-6 for the most likely mode of inheritance as determined in (a).arrow_forwardPropose the most likely mode of inheritance (autosomal dominant, autosomal recessive, or X-linked recessive) for the following pedigrees. Affected individuals are shown with filled (black)symbols.arrow_forward
- Please consider the following pedigree. Assume that people who marry in to the family do not carry the allele. Assume complete penetrance. I II III 3 IV 1 2 a. Is it possible for the inheritance pattern for the trait illustrated in this pedigree to be as a result of each of the following? Answer yes or no. (i) an autosomal recessive allele (AR) (ii) an autosomal dominant allele (AD) (iii) a X-linked recessive allele (XR) (iv) a X-linked dominant allele (XD) b. Based strictly on the characteristic patterns of inheritance that define the four different options in (a), give a definitive motivation for the most likely mode of inhertance.arrow_forwardDefine the pedigree symbol(s) associated with each of the following individuals. Please be as specific as possible. Be sure to indicate WHOSE pedigree symbols you are defining. (i) II-1 and II-3 (ii) II-5 (iii) II-9-10 (iv) II-11 (v) IV-14 and IV-15 (vi) IV-18arrow_forwardThis pedigree (below) shows inheritance of a genetic disorder in a family. Assume the trait is rare. What is the mode of inheritance for this trait? [Select] You know this because that mode of inheritance is characterized by: [Select] individuals who have the allele express it and • An affected male parent passes the allele to [Select] and [Select] of his daughters. • An affected female parent passes the allele to sons and [Select] [Select] of her daughters. 1008 ㅇㅁㅇㄹ O ✓ of his sons of herarrow_forward
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