Genetics: From Genes to Genomes
6th Edition
ISBN: 9781259700903
Author: Leland Hartwell Dr., Michael L. Goldberg Professor Dr., Janice Fischer, Leroy Hood Dr.
Publisher: McGraw-Hill Education
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Chapter 22, Problem 14P
Compare and contrast the use of SNP genotyping: (i) in the positional cloning of Mendelian disease genes, (ii) in direct QTL mapping, and (iii) in GWAS.
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Compare and contrast the use of SNP genotyping:(i) in the positional cloning of Mendelian diseasegenes, (ii) in direct QTL mapping, and (iii) in GWAS.
How might the Hardy Weinberg relationship be used to evaluate a new SNP genotyping technology using multiple individuals from a population? Group of answer choices
a)If genotypes match the reference genome, the technology is sound. Otherwise, the technology may have problems accurately calling SNPs.
b)If observed phenotypes follow Hardy Weinberg, the technology is sound. Otherwise, the technology may have problems accurately calling SNPs.
c)If genotypes and allele frequencies follow Hardy Weinberg, the technology is sound. Otherwise, the technology may have problems accurately calling SNPs.
d)None of the above
Select all that apply: A SNP (single nucleotide polymorphism) is similar to an STR (short tandem repeat) in that:
a) an individual can have many different copies of specific SNP or STR
b) they both cause diseases
c)they are sequences that have many possible variants
d) an individual has one copy of this region of the genome from each parent.
Chapter 22 Solutions
Genetics: From Genes to Genomes
Ch. 22 - Choose the best matching phrase in the right...Ch. 22 - Suppose you grew genetically identical dandelion...Ch. 22 - How can each of the following be used in...Ch. 22 - Two different groups of scientists studying a rare...Ch. 22 - Which of the following statements would be true of...Ch. 22 - Studies have indicated that for pairs of twins...Ch. 22 - Prob. 7PCh. 22 - Prob. 8PCh. 22 - Table 22.2 lists concordance values for MZ and DZ...Ch. 22 - Prob. 10P
Ch. 22 - Prob. 11PCh. 22 - Two alleles at one locus produce three distinct...Ch. 22 - In a certain plant, leaf size is determined by...Ch. 22 - Compare and contrast the use of SNP genotyping: i...Ch. 22 - Explain the similarities and differences between...Ch. 22 - In Fig. 22.14c, the fw2.2 causal gene was...Ch. 22 - Among the most prevalent pathologies that afflict...Ch. 22 - Human geneticists have found the Finnish...Ch. 22 - Canavan disease, caused by homozygosity for a...Ch. 22 - In GWAS analysis, because of the existence of LD...Ch. 22 - In Fig. 22.15: a. Why do some chromosomes in the...Ch. 22 - Consider the triangle diagram shown in Fig. 22.17....Ch. 22 - Prob. 23PCh. 22 - You conduct a Case/Control study comparing the...Ch. 22 - Prob. 25PCh. 22 - ALS amyotrophic lateral sclerosis is a rare, fatal...Ch. 22 - Through GWAS explorations, scientists have...Ch. 22 - In domesticated dogs, size has a high...Ch. 22 - Suppose a GWAS investigation found a particular LD...Ch. 22 - In 2008, Time magazine named as its invention of...
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- Forward Genetics Analysis uses a variety of beneficial approaches to identify never before described genes. For each of the following approaches or outcomes, briefly (maximum 2 sentences) discuss in your own words, their purpose in Forward Genetics Analysis. c) Mendelian ratios d) Genetic screenarrow_forwardUsing the information provided below, which of the individuals A and B have: i) Genotypic change ii) Phenotypic change iii) Genotypic and phenotypic change X is the partial CDNA sequence of the normal CFTR gene. Use this to determine which DNA sequence (A &B) is the DNA extracted from a patient with and without disease. X) ATGGCGGTCACTCGGCAATTTCCCTGGGCTGTACAAACATGGTATGACTCTCTTGGAGCAATAAACA Met. A V IR Q F P WA V Q T W Y D S L GAI .. A) ATGGCGGTCACTCGGCAATTTCCCTGGGCTGTACAAACAGGTATGACTCTCTTGGAGCAATAAACAA Met. B) ATGGCGGTCACTCGGCAATTTCCCTGGGCTGTACAAACTTGGTATGACTCTCTTGGAGCAATAAACA Met. Since this is a complementary DNA (CDNA) The nucleotide "T" can be directly replaced with U to get the mRNA strand. Example: ATG is AUG, TCA is UCA etc Second letter G UAU UCU c Phe UCc UGU UUC U UUA UAC JTyr UGCCYS Ser UCA UCG UAA Stop UGA Stop A UAG Stop UGG Trp UUG Leu G. CUU CCU CCC Pro CAU CAC Hi. CAA CAGJ CGU CGC CUC CUA Leu CCA Arg CGA Gin CUG CCG CGG AUU ACU ACC ACA AUG Met ACG LAsn AGUser AAC AUC…arrow_forwardWhy is QTL mapping in human genetic diseases important?arrow_forward
- a) what feature of the genome is likely to be located between the two LD blocks that allows scientists to visualize them as seperate blocks? b) Even though the fugure analyzes nine different SNPs, genotyping just two of se SNPs would allow you to predict the genotype of almost everyone in the population. Explain why this limited genotyping has predictive value. c) When obtaining the data allowing construction of triangular diagrams, have researchers typically genotyped common SNPs or rare SNPs? Explain.arrow_forwardTraditional Sanger sequencing has largely been replaced in recent years by next-generation and third-generation sequencing approaches. Describe advantages of these sequencing methods over first-generation Sanger sequencing.arrow_forwardHi, I would like to know which program is used for the graphical presentation of the results of a meta-analysis of genome-wide linkage scans?arrow_forward
- which of the following statements about genome-wide association studies (GWAS) is correct? A) involves scanning the genomes of thousands of unrelated individuals with a particular mutation and comparing them with the genomes of individuals who do not have the mutation. B) involves scanning the genomes of thousands of unrelated individuals with a particular disease and comparing them with the genomes of individuals who do not have the disease C) attempt to identify genes that influence mutation risk D) attempt to identify genes that influence disease risk E) involves scanning the genomes of thousands of unrelated individuals with a particular disease and comparing them with the genomes of individuals who do not have the disease and GWAS attempt to identify genes that influence disease riskarrow_forwardHow can linkage disequilibrium mapping sometimes provide a much higher resolution of gene location than classical linkage mapping?arrow_forwardBriefly explain how Genome Wide Association Studies (GWAS) are done. Then, using this example of a Manhattan Plot explain what each of the X-axis and the Y-axis signifies in a GWAS.arrow_forward
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