The segment of DNA shown in the figure has restriction sites I and II, which create DNA restriction fragments A, B, and C. Which of the gels produced by electrophoresis best represents the separation and identity of these fragments? Reminder: a positive electrode is located at one end of the gel and the negative electrode at the other end. II O a. From the positive to the negative end, the order of the fragments will be B, A, C Ob. From the positive to the negative end, the order of the fragments will be A, B, C O c. From the negative to the positive end, the order of the fragments will be B, A, C O d. From the positive to the negative end, the order of the fragments will be C, A, B O e. From the negative to the positive end, the order of the fragments will be A, B, C

The segment of DNA shown in the figure has restriction sites I and II, which create DNA restriction fragments A, B, and C. Which of the gels produced by electrophoresis best represents the separation and identity of these fragments? Reminder: a positive electrode is located at one end of the gel and the negative electrode at the other end. II O a. From the positive to the negative end, the order of the fragments will be B, A, C Ob. From the positive to the negative end, the order of the fragments will be A, B, C O c. From the negative to the positive end, the order of the fragments will be B, A, C O d. From the positive to the negative end, the order of the fragments will be C, A, B O e. From the negative to the positive end, the order of the fragments will be A, B, C

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter13: An Introduction To Genetic Technology

Section: Chapter Questions

Problem 8QP

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Which of the following best describes the process of DNA sequencing? a. DNA is separated on a gel, and the different bands are labeled with fluorescent nucleotides and scanned with a laser. b. A laser is used to fluorescently label the nucleotides present within the DNA, the DNA is run on a gel, and then the DNA is broken into fragments. c. Nucleotides are scanned with a laser and incorporated into the DNA that has been separated on a gel, and then the DNA is amplified with PCR. d. Fragments of DNA are produced in a reaction that labels them with any of four different fluorescent dyes, and the fragments then are run on a gel and scanned with a laser. e. DNA is broken down into its constituent nucleotides, and the nucleotides are then run on a gel and purified with a laser.
On the gel shown below are four DNA samples. Samples A to C are taken from tissues of landslide victims that are being identified, while sample D came from a hair sample brought by a mother looking for the remains of her son. (see img) i. If similar band patterns in a gel are created using the same restriction enzyme, what does that tell you about the DNA sequence of the samples? ii. In sample C, only two fragments were created. How many restriction sites (regions where enzymes cut) are present in sample C?
If a 1000 bp of DNA were inserted between the two restriction sites, how would the banding pattern on the gel differ from the one you drew in part a? (PART A WITH THE FIRST PART OF THE QUESTION IS ATTACHED)
All of the following are performed during restriction fragment length polymorphism analysis. 1. splitting of double-stranded into single-stranded DNA 2. gel electrophoresis 3. autoradiography 4. immersion in radioactive probes 5. digestion of DNA with restriction endonucleases 6. use of a positive charge to transfer single-stranded DNA from a gel to a membrane. The correct sequence of these operations is what
Use the sequence provided and make use of figure 1 to determine what restriction enzyme uses the spesific recognition site and figure 2 and 3 to detremine how many times does the sequence occur in the λ DNA sequence? GGATCC: __________________________________________________________ GAATTC: ___________________________________________________________ AAGCTT: ___________________________________________________________
Describe the nature of recognition sites for restriction enzymes and the nature of the ends of the DNA that are left. Why do we need to run a gel electrophoresis after enzyme digestion
A small DNA molecule was cleaved with several different restriction nucleases, and the size of each fragment was determined by gel electrophoresis. The following data were obtained.
Which of the following sequences in double-stranded DNA is most likely to be recognized as a cutting site for a restriction enzyme? AAGG TTCC GGCC CCGG ACCA TGGT AAAA TTTT
An important feature of restriction enzymes is that each enzyme only recognizes a specific palindrome and cuts the DNA only at that specific sequence of bases. A palindromic sequence can be repeated a number of times on a strand of DNA, and the specific restriction enzyme will cut all those palindromes, no matter what species the DNA comes from. A linear DNA molecule is represented below. The DNA is represented by one line, although in actuality, DNA has two strands. If the DNA molecule has two restriction sites, specifically two repeats of a specific palindrome sequence, A and B, for a specific restriction enzyme: How many fragments would be produced if the DNA is cut by that enzyme? Number each fragment Which fragment would be the largest? Which fragment would be the smallest?
An E. coli genomic DNA fragment is run out on a gel undigested (U), and then with two different restriction enzymes. Based on the gel below, what is the most appropriate reason for the and pattern displayed? DpnI is likely a restriction enzyme naturally found in E. coli. The DNA fragment is methylated at the EcoRI cut site, but not the DpnI cut site. EcoRI targets methylated cut sites. There is no DpnI cut site on the DNA fragment. The DNA is methylated at the DpnI cut site, but not the EcoRI cut site.
Which of the following is true about restriction endonucleases?a) Type I and II requires ATP to move along DNAb) Type I, II and III requires ATP to move along DNAc) Type II requires no ATP and cleaves DNA within recognition sequenced) Type II requires ATP and cleaves DNA within recognition sequence
Which of the following is a sequence most likely to be recognized by restriction enzymes? a. 5' GATTAATC 3' - double-strand form b. 5' ATG 3' - double-strand form c. 5' AUGCGCAU 3' - double-strand form d. NH3-met-trp-val- COOH e. none of the above