a. What is the mode of transmission of this disease? b. Which SNP allele (ASO1 or ASO2) is originally linked to the disease gene? c. Draw a diagram of the event that gave rise to the genotype of individual IV-5.

Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN:9781305251052
Author:Michael Cummings
Publisher:Michael Cummings
Chapter4: Pedigree Analysis In Human Genetics
Section: Chapter Questions
Problem 10QP: A proband female with an unidentified disease seeks the advice of a genetic counselor before...
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Below is a pedigree showing transmission of a disease; affected individuals are
indicated by solid circles or boxes. Represented below the pedigree are two nylon membranes; DNA
samples from each individual in the pedigree were spotted in identical fashion on each membrane. Each
individual's DNA appears directly below his or her position in the pedigree. Each membrane was
hybridized with allele specific oligonucleotides that detect the two alternative alleles of a single SNP locus
(ASO 1 and ASO 2). Positive hybridization is represented as a filled circle and lack of hybridization is
represented as an open circle.
I
11
III
IV
V
ASO 1
ASO 2
To
1 2 3 4 5 6
a. What is the mode of transmission of this disease?
12
b. Which SNP allele (ASO1 or ASO2) is originally linked to the disease gene?
c. Draw a diagram of the event that gave rise to the genotype of individual IV-5.
d. Individual V-1 is an unborn fetus. If the SNP locus is 10 CM from the disease locus, what is the
likelihood that he will express the disease phenotype? Show your work.
Transcribed Image Text:Below is a pedigree showing transmission of a disease; affected individuals are indicated by solid circles or boxes. Represented below the pedigree are two nylon membranes; DNA samples from each individual in the pedigree were spotted in identical fashion on each membrane. Each individual's DNA appears directly below his or her position in the pedigree. Each membrane was hybridized with allele specific oligonucleotides that detect the two alternative alleles of a single SNP locus (ASO 1 and ASO 2). Positive hybridization is represented as a filled circle and lack of hybridization is represented as an open circle. I 11 III IV V ASO 1 ASO 2 To 1 2 3 4 5 6 a. What is the mode of transmission of this disease? 12 b. Which SNP allele (ASO1 or ASO2) is originally linked to the disease gene? c. Draw a diagram of the event that gave rise to the genotype of individual IV-5. d. Individual V-1 is an unborn fetus. If the SNP locus is 10 CM from the disease locus, what is the likelihood that he will express the disease phenotype? Show your work.
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