Is it possible to perform DNA profiling with SNPs instead of SSRs as DNA markers, but in general you would need to examine more SNP markers that the 13 SSRr used in the CODIS database to be sure of a match. Explain why.
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Is it possible to perform DNA profiling with SNPs instead of SSRs as DNA markers, but in general you would need to examine more SNP markers that the 13 SSRr used in the CODIS database to be sure of a match. Explain why.
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- Give a major disadvantage of RAPD as a DNA marker. Provide one (1) recommendation onhow to address this limitation. Briefly discuss. (in 5 sentences only)Considering counting rules, calculate the initial titre of the sample viral stock if the following plaques were counted in a plaque assay. Show clear sample calculations. Table 1: Plaque assay counts for lambda phage stock titre enumeration of average concentration (PFU/mL) Total dilution of viral stock 1/13500000 1/135000000 1/135000000 plated Volume diluted viral stock 0.1 0.1 0.1 plated (mL) PFU replicate 1 TNTC 275 25 Calculated concentration (PFU/mL) replicate 1 PFU replicate 2 TNTC 239 23 Calculated concentration (PFU/mL) replicate 2 Average concentration (PFU/mL)Bacteriophage P22 was used in generalised transduction experiments to infect the Salmonella typhimurium donor strains described in the table below. The resulting phage lysates were then used to infect the recipient strains of S. typhimurium recipient strains listed in the table. In each cross, a phenotype was selected for one of the selected for one of the three genetic markers studied (str, aceA, thrA), and were made to select the recombinants corresponding to the other two markers. markers. The results are given in the following table: Strain I donor str thrA aceA thrA str aceA+ Strain recipient strs thrA+ aceA thrA str aceA Phenotype selected Str Ace+ Str recombinants selected ThrA ThrA ThrA ThrA Ace Ace Number 60 40 95 5 10 90 str: gene involved in streptomycin resistance, aceA: gene involved in the use of acetate as a carbon source, thrA: gene involved in threonine biosynthesis. 1) What are the selective media used in these three transduction experiments? to obtain the selected…
- Some compounds are “frequent hitters" or pan-assay interferences (PAINS). Does having a really robust assay with Z' approaching 1 help to avoid PAINS? Explain.pZERO®-1 is a 2808 bp cloning vector from Invitrogen. This vector allows effective selection of positive recombinants via disruption of the lethal gene, ccdB. Besides the lethal gene, it has an additional Zeocin resistance gene for tighter screening control. The Zeocin resistance gene in this vector is certainly more advantageous over ampicillin resistance gene. Give its THREE (3) advantages.The following figure shows the FBI-style analysis of the genomic DNA of 10 people (1-10), and also of hair found at a crime scence left by the murderer [***]. This analysis involves the PCR amplification of SSR loci, each from a different (nonhomologus) chromosome. The PCR primers are for each SSR locus are labeled with a unique fluorescent molecule. Some bands are thicker because relatively more of the corresponding PCR product was obtained. The figure has dots aligned on both sides to help you find the crucial bands; it will help to use a straight-edge as a guide. The numbers at right are the total number of copies of the SSR locus among the population of 11 samples. Are any of individuals 1-10 probable relatives of the murderer? If so, identify this person and describe the degree of relationship to the criminal.
- a. Bacteriophage P22 was used in generalized transduction experiments to infect the Salmonella typhimurium donor strains described in the table below. The resulting phage lysates were then used to infect the S. typhimurium recipient strains listed in the table. In each cross, a phenotype was selected for one of the three genetic markers studied (str, aceA, thrA), and then replicates were performed to select the corresponding recombinants for the other two markers. The results are given in the following table: Recipient strain Selected phenotype Selected recombinants Donor strain str thrA aceAt thrA str aceA+ strs thrA+ aceA thrA+ str aceA Str Ace+ Str ThrA ThrA+ ThrA ThrA+ Ace Ace+ str: gene involved in streptomycin resistance, aceA: gene involved in the use of acetate as a carbon source, thrA: gene involved in the biosynthesis of threonine. Number 60 40 95 5 10 90 What are the selective media used in these three transduction experiments, on the one hand to obtain the selected…The following figure shows the FBI-style analysis of the genomic DNA of 10 people (1-10), and also of hair found at a crime scence left by the murderer [***]. This analysis involves the PCR amplification of SSR loci, each from a different (nonhomologus) chromosome. The PCR primers are for each SSR locus are labeled with a unique fluorescent molecule. Some bands are thicker because relatively more of the corresponding PCR product was obtained. The figure has dots aligned on both sides to help you find the crucial bands; it will help to use a straight-edge as a guide. The numbers at right are the total number of copies of the SSR locus among the population of 11 samples. e. What is the probability that any random male in USA would share the same genotype as the murderer (the match probability)? Assume that all 11 DNA samples analyzed in the diagram are together representative of the USA population as a whole. Show what numbers you would multiply to do this calculation.The following figure shows the FBI-style analysis of the genomic DNA of 10 people (1-10), and also of hair found at a crime scence left by the murderer [***]. This analysis involves the PCR amplification of SSR loci, each from a different (nonhomologus) chromosome. The PCR primers are for each SSR locus are labeled with a unique fluorescent molecule. Some bands are thicker because relatively more of the corresponding PCR product was obtained. The figure has dots aligned on both sides to help you find the crucial bands; it will help to use a straight-edge as a guide. The numbers at right are the total number of copies of the SSR locus among the population of 11 samples. Are any of the loci on the Y chromosome? If so, identify this (these) locus (loci) by color.
- The following figure shows the FBI-style analysis of the genomic DNA of 10 people (1-10), and also of hair found at a crime scence left by the murderer [***]. This analysis involves the PCR amplification of SSR loci, each from a different (nonhomologus) chromosome. The PCR primers are for each SSR locus are labeled with a unique fluorescent molecule. Some bands are thicker because relatively more of the corresponding PCR product was obtained. The figure has dots aligned on both sides to help you find the crucial bands; it will help to use a straight-edge as a guide. The numbers at right are the total number of copies of the SSR locus among the population of 11 samples. Are any of the loci on the X chromosome? If so, identify this (these) locus (loci) by color.Salmonella strains developed for the Ames test contain many special phenotypes that make them more useful for these techniques. Many of these phenotypes, including UvrA and rfa, make these strains mutate more easily, and therefore make the assays more sensitive. In 1-2 sentences each, state how the UvrA and rfa phenotypes make Ames test strains more sensitive to mutations.Bacteriophage P22 was used in generalized transduction experiments to infect the Salmonella typhimurium donor strains described in the table below. The resulting phage lysates were then used to infect the S. typhimurium recipient strains listed in the table. In each cross, a phenotype was selected for one of the three genetic markers studied (str, aceA, thrA), and then replicates were performed to select the corresponding recombinants for the other two markers. The results are given in the following table: Recipient strain Selected phenotype Selected recombinants Donor strain str thrA aceA+ thrA str aceA+ strs thrA+ aceA thrA+ str aceA Str Ace+ Str ThrA ThrA+ ThrA ThrA+ Ace Ace str: gene involved in streptomycin resistance, aceA gene involved in the use of acetate as a carbon source, thrA: gene involved in the biosynthesis of threonine. Number 60 40 95 5 10 90 Determine the order of the genes and draw a genetic map showing this order