ASCP MB: Extra-Practice Questions and
Answers Scored A
The Klenow fragment of E. coli DNA polymerase I is used: ✔✔to label DNA probes by random
primer labeling.
What is a solution hybridization method for the detecti
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ASCP MB: Extra-Practice Questions and
Answers Scored A
The Klenow fragment of E. coli DNA polymerase I is used: ✔✔to label DNA probes by random
primer labeling.
What is a solution hybridization method for the detection of nucleic acid:protein interactions?
✔✔gel mobility shift assay
_____ involves mixing a labeled oligonucleotide with a protein extract to see if a specific
interaction occurs, visible with an apparent increase in molecular size on a gel due to the
protein:nucleic acid interaction. ✔✔Gel mobility shift assay
Which probe is most often used to detect trisomy 21 by interphase FISH? ✔✔alpha satellite DNA
probe
_____ detect specific chromosomes and numbers of the specific chromosomes. ✔✔Alpha satellite
DNA probe
Which reagent generates a signal during the annealing stage of a quantitative real time PCR
reaction? ✔✔molecular beacon
Methylation of cytosine residues is involved in the alteration of gene expression in a number of
cancers. Which sequencing technique is best suited to determine if methylation of cytosine
residues has taken place in the promoter region of a given gene? ✔✔bisulfite sequencing
_____ is a modified chain terminator method specifically designed to detect methylated
nucleotides. ✔✔Bisulfite sequencing
Which method is best suited to screen for mutations in a gene having multiple possible mutations?
✔✔single strand conformational polymorphism (SSCP)
_____ is a screening test in which the exact nature of a mutation does not need to be known in
order to detect the presence of a mutation. ✔✔Single strand conformational polymorphism (SSCP)
What is the best method to rule out the possibility of genomic DNA giving a false-positive result
in an RT-PCR reaction? ✔✔use of upstream and downstream primers that span an exon-intronexon region of the target
*amplicaons generated from genomic DNA would be larger than the specific amplicon generated
from a mature, spliced mRNA
A common use for pulsed-field gel electrophoresis is: ✔✔epidemiological typing of bacterial
strains.
_____ after digestion of bacterial chromosomes with restriction enzymes is used to determine
similarity between bacterial isolates. ✔✔PFGE
A translocation in which chromosome pair creates a BCR/ABL1 fusion gene product associated
with CML?
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