Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Chapter 23.3, Problem 1COMQ
A molecular marker is a _____ found at a specific site on a chromosome that has properties that allow it to be _____.
a. colored dye, visualized via microscopy
b. colored dye, visualized on a gel
c. segment of DNA, uniquely identified using molecular tools
d. segment of DNA, visualized via microscopy
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A contig is
a. a set of molecular markers used in gene mapping.
b. a set of overlapping fragments that form a continuous stretch of DNA.
c. a set of fragments generated by a restriction enzyme.
d. a small DNA fragment used in sequencing.
DNA fragments that are 500 bp, 1000 bp, and 2000 bp in length are separated by gel electrophoresis. Which fragment will migrate farthest in the gel?
a. The 2000-bp fragment
b. The 1000-bp fragment
c. The 500-bp fragment
d. All will migrate equal distances.
When you collect your cheek cells and prepare the DNA, is it really a problem that bacteria and food bits are in the sample too?
A
Yes, it is contamination, and any kind of contamination is a problem.
B
No, because food bits and bacteria do not contain human chromosome 16. Only contamination with human DNA of another individual would confuse the results.
Chapter 23 Solutions
Genetics: Analysis and Principles
Ch. 23.1 - Prob. 1COMQCh. 23.2 - Prob. 1COMQCh. 23.3 - A molecular marker is a _____ found at a specific...Ch. 23.3 - 2. Which of the following is an example of a...Ch. 23.3 - To map the distance between molecular markers via...Ch. 23.4 - 1. What is a contig?
a. A fragment of DNA that...Ch. 23.4 - A vector that can carry a large fragment of...Ch. 23.4 - 3. Chromosomal walking is a method of _____ in...Ch. 23.5 - Prob. 1COMQCh. 23.5 - Prob. 2COMQ
Ch. 23.5 - 3. A prokaryotic genome is about 4 million bp in...Ch. 23.6 - Metagenomics is aimed at a. determining the...Ch. 23 - 1. A person with a rare genetic disease has a...Ch. 23 - For each of the following, decide if it could be...Ch. 23 - Which of the following statements about molecular...Ch. 23 - 1. Is each of the following a method used in...Ch. 23 - Prob. 2EQCh. 23 - Prob. 3EQCh. 23 - The cells from a persons malignant tumor were...Ch. 23 - 5. Figure 23.2 describes the technique of FISH....Ch. 23 - Explain how DNA probes with different fluorescence...Ch. 23 - 7. A researcher is interested in a gene found on...Ch. 23 - Prob. 8EQCh. 23 - Prob. 9EQCh. 23 - Prob. 10EQCh. 23 - Prob. 11EQCh. 23 - Prob. 12EQCh. 23 - In the Human Genome Project, researchers have...Ch. 23 - 14. Take a look at question 3 in More Genetic...Ch. 23 - 15. Place the following stages of a physical...Ch. 23 - 16. What is an STS? How are STSs generated...Ch. 23 - 17. Four cosmid clones, which we will call cosmids...Ch. 23 - A human gene, which we will call geneX, is located...Ch. 23 - 19. Describe how you would clone a gene by...Ch. 23 - 20. A bacterium has a genome size of 4.4 Mb. If a...Ch. 23 - 21. Discuss the advantages of next-generation...Ch. 23 - Prob. 22EQCh. 23 - Prob. 23EQCh. 23 - What is a molecular marker? Give two examples....Ch. 23 - Which goals of the Human Genome Project do you...
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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
- You used agarose gel electrophoresis to separate DNA fragments of different size and the experiment worked well. However, you wanted to re run the experiment but this time you made the gel with a higher percentage of Agarose. How might this affect your results compared to the first run? a. There would be no difference between the runs since it is the current, not the agarose that causes migration. b. The higher concentration of agarose would cause the DNA to break apart. c. You can't predict how the concetration of agarose would affect migration. d. The DNA fragments would migrate further down the gel than they did the first time. e. The DNA fragments wouldn't migrate as far down the gel as they did the first time.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_forwardWhen constructing a recombinant DNA molecule, a marker gene is used to: a. give the organism a new trait, such as insect resistance b. Identify whether the transformed organism contains the recombinant DNA c. replicate (copy) the gene of interest d. Introduce the recombinant DNA into an organism e. cut short sequences of DNAarrow_forward
- Polymerase Chain Reaction, or PCR, can Group of answer choices A. target a specific region of DNA and cut it out of the rest of the genetic material for further analysis. B. copy the number of copies of a selected region of DNA linearly. C. increase the number of copies of a selected region of DNA exponentially. D. copy the entire genome at least a dozen times.arrow_forwardPlace the steps of sanger sequencing in order.A. A fluorescent laser excites the fragments and records the wavelength consistent with a single nucleotide. B. ddNTPs bind and stop chain extension.C. DNA fragments are separated by size through a capillary tube. D. DNA polymerase copies the target region of template DNA.E. The final nucleotide of each fragment is labeled with a fluorescent tag.arrow_forwardRegarding 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_forward
- Which of the following is FALSE about current Sanger dideoxy DNA sequencing procedures? a. Chain termination occurs during synthesis of a new DNA strand. b. Many steps can be automated. c. No DNA is synthesized in the procedure. d. Fluorescent molecules can be used to detect the DNA.arrow_forwardDNA fingerprinting analyzes the DNA from individuals on the basis of the occurrence of in their genomes. a. repetitive sequences b. abnormalities in chromosome structure c. specific genes d. viral insertionsarrow_forwardA genetic disease is caused by a deletion in part of a gene. The deletion results in one copy of the gene being shorter whereas the other copy is normal length. In the gel below, the DNA sequences of this gene from four individuals have been amplified using PCR (the gel is loaded at the top of the tray). Lane 1 of the gel shows an individual who does not have the disease. Which of the bands represents the disease allele? A B Carrow_forward
- A DNA library is aa) A DNA fragment inserted into a vector.b) A general collection of all genes sequenced thus far.c) All DNA fragments identified with a probe.d) A collection of DNA fragments that make up the entire genome of a particular organism.arrow_forwardExplain how electrophoresis separates DNA strands. a. How is a DNA fingerprinting test interpreted? b. Define plasmid and how plasmids can change a bacteria’s activity. c. How do we digest/cleave plasmids? Explain the role of a restriction enzyme. d. Define sticky end and blunt end and which one is useful in molecular biology.arrow_forwardShotgun sequencing is a method of DNA sequencing in whicha. the DNA fragments to be sequenced are randomly generatedfrom larger DNA fragments.b. the sequencing reactions are carried out in rapidsuccession.c. the samples to be sequenced are rapidly generatedby PCR.d. all of the above occur.arrow_forward
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