MB (ASCP) 2020 Exam Questions With Answers All Verified

MB (ASCP) 2020 Exam Questions With Answers All Verified Consider the table below where a child and a possible father (PF) share the listed paternity indices for each locus listed (LOC-A1, LOC-B2, LOC-C3, LOC-D4). Locus Tested PF Child Paternity Index LOC-A1 3 2/3 2.18 LOC-B2 7/5 5 0.798 LOC-C3 15/17 9/17 5.21 LOC-D4 12 12 1.37 Based on the data presented in the table, what is the combined paternity index, CPI, from the loci tested: LOC-A1, LOC-B2, LOC-C3 and LOC-D4? 12.42 9.558 15.56 2.38 - ANS 12.42 ( CPI is calculated by multiplying all Paternity index tgt) Best way to avoid PCR contamination - ANS Separate Pre-PCR (clean area) and post PCR (dirty area) A260=1.4, A280=1.1 . protein contamination or Rna contam or useable RNA - ANS Protein contamination . A260/280 = 1.3 <1.6 = protein contamination, 1.7-2.0 = good DNA, 1.9-2.0 = good RNA Why is Fluorometry a better technique that Spectroscopy - ANS Increased sensitivity and more importantly can accurately measure DNA concentration of a structurally intact double stranded DNA molecule Linkage Disequilibrium - ANS LD is the non random association of alleles at 2 or more loci in a general population. When alleles are in LD, haplotypes do not occur at the expected frequencies. Specificity - ANS Specificity = TN / (TN + FP) Limit of Detection (LOD) - ANS lowest concentration of analyte that can be detected mRNA Sequence provided - Convert it into DNA - ANS (Template/Anti-sense Strand) [Replace U with T] Correct order of HIV Sample Preparation Workflow - ANS Plasma Preparation RNA Extraction RNA Amplification/Modification Procedure If a flask of cells is provided for the intended purpose of DNA isolation, how would you proceed further - ANS Trypsinize and/or scrape the cells inside the provided flask, collect the cells suspended in the media, spin, and then proceed further Which end of the primer is critical for the increased specification of PCR Amplification process - ANS 3'End of the Primer Primer Dimer Complementarity - ANS 5' End of the Primers (3-3' Was not an option) Mechanism of Action of MecA Gene in MRSA - ANS Altered Drug Target (PBP2A) Technique to be used for FFPE Cervical Tissue Provided - ANS Invader Assay (Non-Amplification Method) Liquid Based-Cytology Useful for what kind of virus - ANS HPV is the correct answer (Options Provided for: HIV, HBV, HCV, HPV) Isothermal Method that utilizes Primes and Polymerase to Create Synthetic dsDNA - ANS SDA (Strand Displacement Amplification)