Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Textbook Question
Chapter 21, Problem 5TY
Let’s suppose you want to clone a gene that has never been analyzed before by DNA sequencing. Which of the following statements is the most accurate?
- a. Do PCR to clone the gene because it is much faster.
- b. Do PCR to clone the gene because it is very specific and gives a high yield.
- c. You can’t do PCR because you can’t make forward and reverse primers.
- d. Do cloning using a vector because it will give you a higher yield.
- e. Do cloning by insertion into a vector because it is easier than PCR.
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Students have asked these similar questions
Would it be possible to use human polymerase for the PCR reaction?
a.
No, because human polymerase does not have the ability to withstand the high temperatures required for the PCR reaction to occur.
b.
No, because human polymerase cannot be extracted from cells to use in a lab setting.
c.
Yes, because we are using human DNA as the template DNA.
d.
Yes, because human polymerase can add bases to a template strand without a primer.
(A) After three cycles of PCR, how many DNA molecules are present that correspond precisely to the desired amplification product?
(B) What about after 5 cycles. Assume that we started with one molecule in each case, and that the reaction is perfectly efficient.
In pcr experiment, Does electrophoresis show that only DNA products of the desired size are present? If not, what do you think is the reason?
Chapter 21 Solutions
Biology
Ch. 21.1 - Prob. 1CSCh. 21.1 - Prob. 1CCCh. 21.1 - Prob. 2CCCh. 21.1 - Prob. 3CCCh. 21.2 - Prob. 1CCCh. 21.2 - Prob. 2CCCh. 21.2 - Prob. 3CCCh. 21.3 - Prob. 1EQCh. 21.3 - Prob. 2EQCh. 21.3 - Prob. 3EQ
Ch. 21.4 - Prob. 1CCCh. 21.4 - Prob. 1CSCh. 21.5 - Prob. 1CSCh. 21.5 - Repetitive Sequences and Transposable Elements...Ch. 21 - Prob. 1TYCh. 21 - DNA ligase is needed in a cloning experiment a. to...Ch. 21 - Prob. 3TYCh. 21 - Why is Taq polymerase used in PCR rather than...Ch. 21 - Lets suppose you want to clone a gene that has...Ch. 21 - In the CRISPR-Cas technology for editing genes,...Ch. 21 - Prob. 7TYCh. 21 - The enzyme that helps short segments of DNA move...Ch. 21 - Prob. 9TYCh. 21 - Which of the following was not a goal of the Human...Ch. 21 - Prob. 1CQCh. 21 - Briefly describe whether or not each of the...Ch. 21 - Prob. 3CQCh. 21 - Identify and discuss three important advances that...Ch. 21 - Prob. 2COQ
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Choose the correct statements from the list below. There may be more than one correct statement. A) If you start with 2 DNA templates, after four rounds of PCR you'll have 32 copies B) PCR is useful in making millions or billions of copies of a gene so that it is present in a quantity large enough to study C) quantitative PCR is very similar to PCR, but fluorescent probes are added so that we can measure how much PCR product exists by examining how much the reaction fluoresces D) In real-time reverse transcriptase PCR, the RNA is used as a template to make a cDNA copy (through reverse transcriptase)arrow_forwardIn next-generation sequencing, which of these advances allows for massively parallel sequencing? a. Pieces of DNA are fixed to a surface, so we can tell which new nucleotides were added to each piece. b. DNA sequences are read in real-time as nucleotides are added to each piece. c. Each segment of the genome can be pieced back together through shotgun alignment d. Single molecules of DNA can be read without the need for amplification.arrow_forwardWhat is expected theoretical number of copies of DNA molecules after 28 cycles in a PCR experiment? What is the percent efficiency of the PCR experiment if the actual number of copies was 500,000,000? Show your calculationsarrow_forward
- 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.arrow_forwardYou want to amplify a specific region of DNA during PCR. Your primers should a Both should be an exact replica of the beginning of the specific gene you want to amplify b Both should be complementary to the beginning of the specific gene you want to amplify c One primer should be identical to the beginning of the gene sequence while the other is identical to the end of the gene sequence d One primer should be complementary to the beginning of the gene sequence while the other is complementary to the end of the gene sequence e One primer should be identical to the beginning of the gene sequence while the other is complementary to the end of the gene sequencearrow_forwardWhat is the purpose of adding a primer to a PCR reaction? Is this primer made up of DNA or RNA nucleotides? Explain your reasoning.arrow_forward
- Arrange the following steps in the sequence they would happen in a DNA cloning experiment. a. sealing DNA fragments into vectors with DNA ligase; b. utilizing a probe to detect a clone in the library; c. sequencing the clone's DNA; d. creating a DNA library of clones; e. cutting genomic DNA with restriction enzymes. A. e,a,d,b,c B. a,d,b,c,e C. c,b,e,a,d D. e,d,a,c,barrow_forwardFor each of the following experimental goals, is PCR orgene cloning preferable and why?a. Isolate the same gene from 20 individuals.b. Isolate 100 genes from the same individual.c. Isolate a mouse gene when you have a rat genefragment.arrow_forwardDescribe the method of a PCR technique in which you can amplify fragments randomly? Briefly.arrow_forward
- Regarding the PCR technique, what is false?a. It can produce multiple copies of DNA.b. It is the same as DNA fingerprinting.c. It is not a time-consuming process.d. It cannot successfully copy whole genesarrow_forwardWhat is the purpose of the low temperature step in the PCR reaction? a. To allow DNA polymerase to synthesize new DNA in the 3' to 5' direction b. To permanently deactivate DNA polymerase c. To allow primers to anneal to DNA templates d. To allow DNA polymerase to synthesize new DNA in the 5' to 3' directionarrow_forwardIn pcr: How do you know if it works? If you have more than one band in a lane, why what would be the reason?arrow_forward
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