GENETIC ANALYSIS: AN INTEG. APP. W/MAS
2nd Edition
ISBN: 9781323142790
Author: Sanders
Publisher: Pearson Custom Publishing
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Chapter 7, Problem 33P
Three independently assorting VNTR markers are used to assess the paternity of a colt (C) recently born to a quarter horse mare (M). Blood samples are drawn from the mare, her colt, and three possible male sires (
Evaluate the data and determine if any of the potential sires can be excluded. Explain the basis of exclusion, if any, in each case.
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A RFLP is discovered that is linked to the gene for Duchenne’s muscular dystrophy (DMD). DMD is an X-linked, recessive trait. The RFLP is 2 map units from the gene for DMD. Consider the following pedigree and Southern blot using a probe that hybridizes to the RFLP.
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An amniocentesis is performed and it is determined that 9’s child in utero has only a 10 kb band that hybridizes to the same probe used above. What can you say about the child now?
This is a schematic diagram of an agarose gel used to analyze the DNA fragments generated by analyzing individual female flies with primers P1, P2, and P3 in a single PCR reaction. Lane M represents DNA fragments that are size markers (standards). In lanes 1, 2, and 3, sketch in the DNA fragments expected to be produced by PCR for female Drosophila homozygous for wild-type, heterozygous, and homozygous for the white-one mutation, respectively:
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?
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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…
Chapter 7 Solutions
GENETIC ANALYSIS: AN INTEG. APP. W/MAS
Ch. 7 - What results from the experiments of Frederick...Ch. 7 - 7.2 Explain why Avery, MacLeod, and McCarty’s in...Ch. 7 - 7.3 Hershey and Chase selected the bacteriophage...Ch. 7 - 7.4 Explain how the Hershey and Chase experiment...Ch. 7 - 7.5 One strand of a fragment of duplex DNA has the...Ch. 7 - 7.6 The principles of complementary base pairing...Ch. 7 - For the following fragment of DNA, determine the...Ch. 7 - 7.8 Figures present simplified depictions of...Ch. 7 - 7.9 Consider the sequence -ACGCTACGTC-.
What is...Ch. 7 - DNA polymerase III is the main DNA-synthesizing...
Ch. 7 - Explain how RNA participates in DNA replication.Ch. 7 - A sample of double-stranded DNA is found to...Ch. 7 - Bacterial DNA polymerase I and DNA polymerase III...Ch. 7 - Diagram a replication fork in bacterial DNA and...Ch. 7 - Prob. 16PCh. 7 - Which of the following equalities is not true for...Ch. 7 - List the order in which the following proteins and...Ch. 7 - Two viral genomes are sequenced, and the following...Ch. 7 - Matthew Meselson and Franklin Stahl demonstrated...Ch. 7 - Raymond Rodriguez and colleagues demonstrated...Ch. 7 - 7.22 Joel Huberman and Arthur Riggs used pulse...Ch. 7 - 7.23 Why do the genomes of eukaryotes, such as...Ch. 7 - Bloom syndrome (OMIM 210900) is an autosomal...Ch. 7 - 7.25 How does rolling circle replication (see...Ch. 7 - Telomeres are found at the ends of eukaryotic...Ch. 7 - A family consisting of a mother (I-1), a father...Ch. 7 - In a dideoxy DNA sequencing experiment, four...Ch. 7 - Prob. 29PCh. 7 - Using an illustration style and labeling similar...Ch. 7 - A PCR reaction begins with one double-stranded...Ch. 7 - Prob. 32PCh. 7 - Three independently assorting VNTR markers are...Ch. 7 - 7.34 A sufficient amount of a small DNA fragment...Ch. 7 - Prob. 35P
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- Pedigree Analysis Is a Basic Method in Human Genetic: What are the reasons that pedigree charts are used?arrow_forwardPedigree Analysis Is a Basic Method in Human Genetic: What does OMIM stand for? What kinds of information are in this database?arrow_forwardHere is a DNA agarose gel showing PCR products from a mouse genotyping experiment. Genotyping tells us whether each mouse is a wild type mouse (i.e. not genetically modified) or a mutant mouse. Interpret the results for each mouse 1-3.arrow_forward
- Consider the first category of test-cross offspring shown in figure 8.2 (+b, LS). Consider also that the parents of the heterozygous female flies in the test cross had the following genotypes: bb, SS, and +, LL. A. What would be the physical phenotype of these flies? B. If PCR was conducted with the DNA of one of these flies using the primers for the molecular marker, what would be the appearance of the bands on an electrophoresis gel with the PCR products? C. If the gene for black body and the locus for the molecular marker (L long or S short) were unlinked, what proportion of the test-cross progeny would be black flies that are heterozygous for the molecular marker? What proportion would be flies with normal body color, which are homozygous for one form of the molecular marker? D. If the gene for black body and the locus for the molecular marker were linked, how would the proportion of flies be different?arrow_forwardAs the leading scientist in a biomedical science laboratory, it is up to you to give advice to your lab assistants when they are having problems with their experiments. What advice would you give to your assistants that are having the following problems: After performing a polymerase chain reaction (PCR) and agarose gel electrophoresis to confirm the presence of the CO1 gene of 750bp. a. They observe no band appearing on an agarose gel. What would be your conclusion? b. They observe three bands of different sizes that resemble a smear on the gel. Advise. a. They observe a single band on the gel and conclude that the PCR product is an exact copy of the original template DNA. Would you support their conclusion? Explainarrow_forwardDNA obtalned from the indicated donor strains is used to TRANSFORM the indicated recipient strains. The resulting progeny are plated on minimal medium so that only wild- type recombinants are scored. The number of wild-types for each cross is given in the chart below. What is the order of the genes? Donor Recipient wid type colonies a-b- c+ a+ b+ c- 273 a- b+ c- a+ b-c+ 462 a- b+ C+ a+ b-c- 2 a b- C+ a- b+ c+ O 4-b-c a-o-b b-a-c cannot be determined Question 18 of 26arrow_forward
- DNA obtained from the indicated donor strains is used to TRANSFORM the indicated recipient strains. The resulting progeny are plated on minimal medium so that only wild-type recombinants are scored. The number of wild-types for each cross is given in the chart below. donor donor arg+ val- ser- val+ ser- arg- val- ser+ val- ser+ arg+ val- ser- O valine recipient recipient none of these. O arginine arg- val+ ser+ arg+ val- ser+ Which locus is closest to serine? arg+ val+ ser- wild-types wild-types 70 98 0 2 arg- arg-arrow_forwardForward Genetics Analysis uses a variety of beneficial approaches to identify never before described For each of the following approaches or outcomes, briefly (maximum 2 sentences) discuss in your own words, their purpose in Forward Genetics Analysis. genes. a) Parental cross b) F1 X F1 crossarrow_forwardConsider the first category of test-cross offspring shown in figure 8.2 (+b, LS). Consider also that the parents of the heterozygous female flies in the test cross had the following genotypes: bb, SS, and +, LL. A. What would be the physical phenotype of these flies? B. If PC was conducted with the DNA of one of these flies using the primers for the molecular marker, what would be the appearance of the bands on an electrophoresis gel with the PC products? C. If the gene for black body and the locus for the molecular marker (L long or S short) were unlinked, what proportion of the test-cross progeny would be black flies that are heterozygous for the molecular marker? What proportion would be flies with normal body color, which are homozygous for one form of the molecular marker? D. If the gene for black body and the locus for the molecular marker were linked, how would the proportion of flies be different?arrow_forward
- The picture shows a gel of PCR products for the loci SRY, AMELX/Y and ZFX/Y, for three controls and five test human individuals (1-5). Below the gel is the phenotypic sex of each individual, their fertility status, and the number of Barr bodies seen in the nucleus of a somatic cell in each case. The diagram to the right shows the positions of the tested loci on the human sex chromosomes, and also the positions of the PRKX and PRKYgenes. Which sample carries a derived X chromosome with a translocation due to ectopic crossover between the loci PRKX and PRKY: 46,X,derX,t(X,Y); ? 1 2 3 4 5arrow_forwardExplain the similarities and differences between the procedures used for the coarse-scale mapping and fine-scale mapping of QTLs through controlled crosses, as was accomplished for QTLs involved with tomato size.arrow_forwardSTR markers: are point mutations detectable by DNA sequencing are variations in the number of repeats of very short DNA motifs (2-10 nucleotides) □have high polymorphism are mutations leading to proteins or blood groups that can be differentiated by antigenic testing from a blood sample ☐have low polymorphism no correct answer are changes of a few nucleotides leading to the absence or presence of a site recognized by a restriction enzyme are variations in the number of repeats of medium-sized DNA motifs (10-100 nucleotides) can be located in coding sequences are located exclusively on autosomesarrow_forward
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