Biology - Study Guide
8th Edition
ISBN: 9780321501561
Author: Martha R. Taylor
Publisher: PEARSON EDUCATION (COLLEGE)
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Chapter 20, Problem 20TYK
Summary Introduction
Introduction: The restriction enzymes are present in bacteria and in other prokaryotes. The restriction enzymes recognize short
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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
What does it mean if a restriction enzyme produces ‘sticky’ or ‘blunt’ ends? Does the restriction enzyme HaeIII produce “sticky” ends or “blunt” ends?
You want to insert a sequence in the lacI gene to alter its function,what restriction enzyme(s) will you use?Indicate 1 or 2restriction enzyme(s) that you will use on the gene to show the cut
Chapter 20 Solutions
Biology - Study Guide
Ch. 20 - In what ways would third-generation sequencing be...Ch. 20 - The following schematic diagram depicts an...Ch. 20 - Which of the following DNA sequences would most...Ch. 20 - a. When PCR is used to prepare a DNA fragment for...Ch. 20 - a. What are some of the benefits of determining...Ch. 20 - Prob. 6IQCh. 20 - What are some of the practical and ethical...Ch. 20 - Prob. 8IQCh. 20 - Prob. 1SYKCh. 20 - Fill in the table on the previous page on the...
Ch. 20 - Prob. 3SYKCh. 20 - Prob. 1TYKCh. 20 - Prob. 2TYKCh. 20 - Gel electrophoresis is a means of separating...Ch. 20 - Prob. 4TYKCh. 20 - Prob. 5TYKCh. 20 - The following segment of DNA has restriction sites...Ch. 20 - Prob. 7TYKCh. 20 - Prob. 8TYKCh. 20 - Prob. 9TYKCh. 20 - Prob. 10TYKCh. 20 - Prob. 11TYKCh. 20 - Which enzyme is used in the polymerase chain...Ch. 20 - Prob. 13TYKCh. 20 - STRs (short tandem repeats) are a valuable tool...Ch. 20 - Prob. 15TYKCh. 20 - Which of the following has the greatest potential...Ch. 20 - Prob. 17TYKCh. 20 - Petroleum-lysing bacteria are being engineered for...Ch. 20 - Prob. 19TYKCh. 20 - Prob. 20TYK
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- In relation to the use of restriction enzymes in recombinant DNA technology, answer the following: You have accidentally torn the labels off two tubes (tube A and tube B), each containing a different plasmid, now you do not know which plasmid is in which tube. Fortunately, you have restriction maps for both plasmids, shown in Figure below. You have the opportunity to test just one sample from one of your tubes. By utilizing agarose gel electrophoresis technique, which restriction enzyme OR combination of restriction enzymes would you use in this experiment to determine which plasmid is found in which tube?. (Hint: if you use Hind III restriction enzyme you are going to get ONE single fragment with a molecular size of → 0.5+0.3+0.2+0.4+1+1 = 3.4 kb).arrow_forwardAn individual is heterozygous for an allele. Allele A has a SNP that results in disruption of an Not1 restriction enzyme site. Allele B has a functional Not1 restriction enzyme site. PCR is performed on the region of the gene containing the SNP to produce a 255bp PCR product. Restriction digestion was subsequently performed using EcoR1 restriction enzyme and the fragments were electrophoresed on an agarose gel. (EcoR1 cuts allele B at a site 115bp from the end of the sequence.) What are the sizes of the subsequent DNA fragments? 1) 115bp + 140bp 2) 205bp + 255bp 3) 140bp 4) 205bp + 255bp + 115bp 5) 140bp + 205bp + 255bp 6) 255bp + 115bp + 140bp 7) 115bp 8) 255bp 9) 115bp + 255bp 10) 255bp + 115bp + 140bp + 205bp 11) 140bp + 205bp 12) 205bp 13) 205bp + 115bp 14) 140bp + 255bparrow_forwardFor Pet41 (choose Pet41 a, b, or c as provided in the image) how would you design the primers (forward and reverse) for the following gene of interest and what restriction enzymes would be used (as shown in the image)? Be sure to explain and elaborate on why selected and how. Gene of Interest: atgggc gacaaaggga 241 cccgagtgtt caagaaggcc agtccaaatg gaaagctcac cgtctacctg ggaaagcggg 301 actttgtgga ccacatcgac ctcgtggacc ctgtggatgg tgtggtcctg gtggatcctg 361 agtatctcaa agagcggaga gtctatgtga cgctgacctg cgccttccgc tatggccggg 421 aggacctgga tgtcctgggc ctgacctttc gcaaggacct gtttgtggcc aacgtacagt 481 cgttcccacc ggcccccgag gacaagaagc ccctgacgcg gctgcaggaa cgcctcatca 541 agaagctggg cgagcacgct taccctttca cctttgagat ccctccaaac cttccatgtt 601 ctgtgacact gcagccgggg cccgaagaca cggggaaggc ttgcggtgtg gactatgaag 661 tcaaagcctt ctgcgcggag aatttggagg agaagatcca caagcggaat tctgtgcgtc 721 tggtcatccg gaaggttcag tatgccccag agaggcctgg cccccagccc acagccgaga 781 ccaccaggca gttcctcatg tcggacaagc ccttgcacct…arrow_forward
- 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?arrow_forwardA group of overlapping clones, designated A through F, is isolated from one region of a chromosome. Each of the clones is separately cleaved by a restriction enzyme, and the pieces are resolved by agarose gel lectrophoresis,with the results shown below. There are nine different restriction fragments in this chromosomal region, with a subset appearing in each clone. Using this information, deduce the order of the restriction fragments in the chromosome.arrow_forwarda) What are vectors? Describe extensively the roles vectors play in genetic engineering? Write short notees on the following: Recombinant DNA, Cloning b) What are restriction enzymes? Describe extensively the roles restriction enzymes play in genetic engineering? Write short notees on the following: Selectable markers, Cloningarrow_forward
- Suppose that a geneticist discovers a new restriction enzyme in the bacterium Aeromonas ranidae. This restriction enzyme is the first to be isolated from this bacterial species. Using the standard convention for abbreviating restriction enzymes, give this new restriction enzyme a name (for help, see footnote to Table 19.1).arrow_forwardGive the recognition sequences for each of the restriction enzymes (a) PagI, (b) AluI, (c) PstI, and (d) RcaI. Show the sequence in double-stranded DNA (dsDNA) format, indicate the cleavage position with a ^, and mention which types of ends are generated in each case (blunt or sticky; 5’ or 3’ overhang)? Recognition sequence for a)PagI cleaves DNA at the recognition sequence 5' ---T ^CATGA--- 3' b) AluI cleaves DNA at the recognition sequence 5' AG^CT 3' c) PstI cleaves DNA at the recog.arrow_forwardOn 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?arrow_forward
- Sickle cell anaemia is caused by a mutation in the HBB gene. The normal wild-type βA allele contains an MstII restriction site; in the mutated sickle-cell βS allele this restriction site has been lost.PCR amplification of part of the gene encompassing the mutation site from a normal unaffected individual results in a product of 110bp. Digestion of the PCR product with MstII and subsequent gel electrophoresis results in a single band of 55bp. How many bands and of what size would you expect to see in individuals who: i) has sickle-cell anaemia (has two βS alleles) ii) carry the disease (sickle cell trait) (has one βS and one βA allele) a. Individual Number of bands Size of bands (bp) Sickle-cell anaemia(has two βS alleles) 2 55 Sickle cell trait)(has one βS and one βA allele) 1 110 b. Individual Number of bands Size of bands (bp) Sickle-cell anaemia(has two βS alleles) 2 110 Sickle cell trait)(has one βS and one βA allele) 2 55 & 110…arrow_forwardWhat is a restriction enzyme? What structure does it recognize?What type of chemical bond does it cleave? Be as specific aspossible.arrow_forwardFor the DNA sequence shown, indicate the products of its cleavage with the following restriction endonucleases (AKA restriction enzymes):5′-ACAGCTGATTCGAATTCACGTT-3′3′-TGTCGACTAAGCTTAAGTGCAA-5′a) EcoRI (the recognition sequence and cleavage site is G↓AATTC);b) AluI (the recognition sequence and cleavage site is AG↓CT).arrow_forward
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