In the Ames test, a ____________ number of colonies is observedif a substance ________ a mutagen, compared with the numberfor a control sample that is not exposed to the suspectedmutagen.a. significantly higher, isb. significantly higher, is notc. significantly lower, isd. significantly lower, is not

In the Ames test, a ____ number of colonies is observedif a substance a mutagen, compared with the numberfor a control sample that is not exposed to the suspectedmutagen.a. significantly higher, isb. significantly higher, is notc. significantly lower, isd. significantly lower, is not

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter10: Biotechnology

Section: Chapter Questions

Problem 7RQ: What is the most challenging issue facing genome sequencing? a. the inability to develop fast and...

See similar textbooks

Similar questions

During an Ames test, what does it mean when S. typhimurium is his+? A. The sample is completely safe for humans B. The sample is safe for humans but has a chance to be a mutagen C. The sample is not safe for humans and is considered a mutagen D. The sample is not safe and is hypothetically a mutagen
A) What are the three main steps involved in PCR? Include temperatures and descriptions of each step. B) Explain why RFLP can produce many bands on an electrophoresis gel and PCR (one set of primers) will only produce one or two bands on a gel for the same genome.
The Hershey-Chase experiment, in which bacteria were infected with radioactively labeled bacterial virus, provided evidence that DNA carries genetic information by showing that A. the bacterial virus injected its 35S-labeled proteins into the cell. B. blender treatment after infection with virus prevented the production of progeny virus particles. C. the production of progeny virus required the injection of viral DNA into the cell. D. 32P-labeled bacterial virus could not produce progeny virus after blender treatment.
a. What determines the size (length) of the primary PCR product? b. What might a successful gel check of a PCR reaction look like?
SNP-chips are used ____. a. with short tandem repeat profiling b. to sequence DNA. c. in PCR d. for full genome sequencing e. in DNA profiling
in Cohen-Boyer's recombinant DNA procedure _______ must be used for both the bacterial DNA and the amphibian DNA _______. a. the same restrictions enzyme, so that the the restriction site are identical in the DNA of each species b. different restriction enzymes, so that the genes outside the restriction site are maintained c. the same restriction enzymes, to ensure that the newly formed DNA can replicate d. different restriction enzymes, to ensure that the newly introducted genes are maintained in the bacterial DNA
Please answer these two questions regarding PCR: a) Why do you need to perform PCR on DNA obtained from a crime scene? b) Why so forensic labs analyze non-coding DNA rather than genes?
You have been performing a PCR reaction but your results aren't the greatest. Your Supervisor has told you that you should increase the concentration of Magnesium. What affect will this have on the reaction? a. The annealing temperature will not be affected but the enzyme activity will be affected. b. The annealing temperature will decrease. c. The denaturation temparture will have to be increased in the PCR protocol. d. The denaturation temparture will have to be decreased in the PCR protocol. e. The Annealing temperature will increase.
Describe the possible outcome of a PCR experiment in which (a) there is a single-stranded break in the target DNA sequence, which is present in only one copy in the starting sample, and (b) there is a doublestranded break in the target DNA sequence, which is present in only one copy in the starting sample.
a. Draw a diagram of what occurs in PCR during the annealing step of the FIRST cycle. b. Draw a diagram of what occurs in the annealing step in the LAST cycle in the vast majority of cases.
Put the following tasks in the order they would occur during a DNA cloning experiment. a. using DNA ligase to seal DNA fragments into vectors b. using a probe to identify a clone in the library c. sequencing the DNA of the clone d. making a DNA library of clones e. cutting genomic DNA with restriction enzymes
You are setting up your PCR reaction and accidentally add twice as much of the salt buffer as you were supposed to. Select all that apply. 1. How will this impact product formation? 2. In what way(s) will the reaction be altered? (a) ...because primer/template binding will be altered (b) ...because the mechanism of dNTP addition will be altered. (c) You will get more of the desired PCR product... (d) ...because template denaturation will be altered. (e) You will get the same amount of the desired PCR product... (f) You will get less of the desired PCR product...