A small-scale pedigree study involving 15 families with a total of 50 children was performed to determine whether a SNP in a candidate gene is linked to a disease. The result showed that among 22 children who developed the disease, 19 belonged to non-recombinants while 3 recombinants. For the remaining 28 children, 21 were non-recombinants and 7 belonged to recombinants. A Lod (Z) score can be calculated and used to determine whether this SNP is linked to the disease. By using a very stringent threshold, which of the following conclusions is correct? OA.Z is approximately 4.03, indicating a linkage O B. Z=0.25, indicating no linkage OC.Z=0.2, indicating no linkage O D.Z is approximately 4.19, indicating a linkage

Human Heredity: Principles and Issues (MindTap Course List)
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Author:Michael Cummings
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Chapter4: Pedigree Analysis In Human Genetics
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Problem 10QP: A proband female with an unidentified disease seeks the advice of a genetic counselor before...
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A small-scale pedigree study involving 15 families with a total of 50 children was performed to determine whether a SNP
in a candidate gene is linked to a disease. The result showed that among 22 children who developed the disease, 19
belonged to non-recombinants while 3 recombinants. For the remaining 28 children, 21 were non-recombinants and 7
belonged to recombinants. A Lod (Z) score can be calculated and used to determine whether this SNP is linked to the
disease. By using a very stringent threshold, which of the following conclusions is correct?
O A.Z is approximately 4.03, indicating a linkage
O B. Z=0.25, indicating no linkage
OCZ=0.2, indicating no linkage
O D.Z is approximately 4.19, indicating a linkage
Transcribed Image Text:A small-scale pedigree study involving 15 families with a total of 50 children was performed to determine whether a SNP in a candidate gene is linked to a disease. The result showed that among 22 children who developed the disease, 19 belonged to non-recombinants while 3 recombinants. For the remaining 28 children, 21 were non-recombinants and 7 belonged to recombinants. A Lod (Z) score can be calculated and used to determine whether this SNP is linked to the disease. By using a very stringent threshold, which of the following conclusions is correct? O A.Z is approximately 4.03, indicating a linkage O B. Z=0.25, indicating no linkage OCZ=0.2, indicating no linkage O D.Z is approximately 4.19, indicating a linkage
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