Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 15, Problem 14TYU
Summary Introduction
To determine: The suspect’s DNA that matches the evidence as shown in the given figure.
Introduction: Short tandem repeats (STRs) are 3-7 base pairs repetitive sequence elements that are scattered throughout the human genome. These polymorphic loci can be amplified and compared with the standard sample to know about the origin of biological samples.
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Loaded into first lane of this gel is a DNA sample from a crime scene. The rest of the lanes
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You are a forensic scientist in charge of DNA samples in a case where a man was murdered. You conduct gel electrophoresis on the samples to determine the DNA profile of the samples. The rows of bands have been marked to make it easier to reference the bands. The sample marked 'evidence' came from under the victim's fingernails, likely indicating a struggle. There are two suspects in the case, both of whom are brothers, they are marked suspect 1 and suspect 2, for brother 1 and brother 2, respectfully. Does the evidence collected match the DNA profiles of either brother? If yes, which one? If no, then would it be likely that the actual criminal is a family member of the brothers? If yes, what could the relation be (mom, dad, cousin, aunt, or uncle)?
Note: there is a sister in their family, their parents are both still alive, and they have a robust extended family. The brothers are not twins.
Chapter 15 Solutions
Biology (MindTap Course List)
Ch. 15.1 - Prob. 1LOCh. 15.1 - Explain how gel electrophoresis is used to...Ch. 15.1 - Describe how PCR is used to amplify a specific...Ch. 15.1 - Compare the possible differences between a...Ch. 15.1 - Prob. 1CCh. 15.1 - Different forms of a protein are produced in the...Ch. 15.1 - What advantages does the PCR method have over gene...Ch. 15.2 - Describe the features of a typical CRISPR locus in...Ch. 15.2 - Explain the function of CRISPR in bacterial cells.Ch. 15.2 - Compare CRISPR-based endonucleases with...
Ch. 15.2 - Prob. 8LOCh. 15.2 - Prob. 1CCh. 15.2 - Prob. 2CCh. 15.2 - Prob. 3CCh. 15.3 - Prob. 9LOCh. 15.3 - Prob. 10LOCh. 15.3 - Discuss how qPCR, DNA microarrays (DNA chips), and...Ch. 15.3 - Explain how you would compare the expression of a...Ch. 15.3 - Prob. 2CCh. 15.4 - Describe how genome-wide association studies have...Ch. 15.4 - Explain how targeted gene silencing and knockout...Ch. 15.4 - Prob. 1CCh. 15.5 - Describe at least one important application of DNA...Ch. 15.5 - Prob. 1CCh. 15.5 - What are short tandem repeats (STRs), and why are...Ch. 15.5 - Why do gene targeting and mutagenesis screening in...Ch. 15.6 - Prob. 15LOCh. 15.6 - Prob. 16LOCh. 15.6 - Prob. 1CCh. 15.6 - Prob. 2CCh. 15.7 - Describe at least two safety issue associated with...Ch. 15.7 - What are some of the environment concerns...Ch. 15 - A plasmid (a) can be used as a DNA vector (b) is a...Ch. 15 - DNA molecules with complementary sticky ends...Ch. 15 - Prob. 3TYUCh. 15 - Which technique rapidly replicated specific DNA...Ch. 15 - Prob. 5TYUCh. 15 - A cDNA clone contains (a) introns (b) exons (c)...Ch. 15 - Prob. 7TYUCh. 15 - Gel electrophoresis separates nucleic acids on the...Ch. 15 - A CRISPR locus in a bacterium contains (a) short...Ch. 15 - DNA molecular with complementary sticky ends...Ch. 15 - These highly polymorphic molecular markers are...Ch. 15 - Prob. 12TYUCh. 15 - Prob. 13TYUCh. 15 - Prob. 14TYUCh. 15 - EVOLUTION LINK DNA technology, such as the...Ch. 15 - SCIENCE, TECHNOLOGY, AND SOCIETY What are some...
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- Questions: Answer questions 1 to 3 about this gel electrophoresis. 1. Which color represents the smallest DNA fragment? (explain) 2. If “A" is the crime scene and B to E are suspects. Do you have any match? (Why or Why not) 3. Is there a possibility that any of the suspect related to the person who committed the crime? Explain.arrow_forwardThe following gel shows the results of a crime scene investigation. Lane 1 shows a DNA sample that was obtained from the scene of a crime (there was evidence of the criminal cutting himself, so it's the criminal's blood sample that produced the DNA bands in lane 1). Lanes 2-7 shows a DNA sample from six potential suspects held in connection with the crime. Arrange the bands labeled A, B, C, D from largest to smallest. 1 2 3 4 5 6 7 OC, A, D, B A, B, C, D OB, D, A, C O D, A, C, Barrow_forwardExamine the gel from a Rape investigation below. If you were the DNA analyst you would conclude that: DNA size markers blood sexual assault evidence samples victim |suspect A suspect B female fracțion male fraction 1 2 3 4 5 6 A. Suspect B is excluded as the source of the evidence, but Suspect A cannot be excluded. B. Both Suspects A and B are excluded as the source of the evidence. C. Suspect A is excluded as the source of the evidence, but Suspect B cannot be excluded. D. Suspect B cannot be excluded as a source of the evidence. The results with Suspect A are inconclusive. E. Neither Suspect A or B can be excluded as a source of the evidence.arrow_forward
- THe DNA profiles of five people potentially involved in a robbery are shown in DNA Profile #2. The profile on the left side was obtained from DNA belongíng the robber. The four other profiles were obtained from the suspects. Which of the potential suspects is most likely the robber?arrow_forwardGel Electrophoresis is used often in forensics. Look at the following gel to the left. From the evidence DNA, which individual matches the DNA evidence left at the crime scene?arrow_forward1) Make up a crime scene scenario (or find a real one) in which DNA from a nonhuman provided critical evidence.arrow_forward
- There are two missing fishermen. Multiple human remains were found in the shark. Are the remains (Samples 01, 02, and 03) from one person, two, or three? Show your evidence.arrow_forwardDOX Crime Scene DNA Fingerprint 11. What can you conclude about sample A's involvement in the crime based on the DNA fingerprint? 12. What can you conclude about samples B and D based on the DNA fingerprint? 13. What can you conclude about sample C's involvement in the crime based on the DNA fingerprint? BC D Paternity DNA Fingerprint 14. What percent of a child's DNA fragments will match their father's? 15. Which of the four men (samples A-D) is the child's father based on the paternity gel? uu wuI see two Ewo cut edges if you cut a hose lengthwise, 7 Dielopre migrafeom (mm) e microscope cut in cross-section or 0WARD'S Natural Science Establishment, Inc. All Rights Reserved "gurv Itier (A-G) on the tissue figures page (page 4) best depicts the tissue you see under the microscope? U 7. What is the term for fhul I || | IL|| I |||| Victim Crime Scenearrow_forwardSince DNA anaylsis is specific to human body fluids such as blood, why do Crime Scene Investigators even bother with doing field test for biological fluids? Why not submit all samples that might have any kind biological fluid to the lab?arrow_forward
- Ending ridge, bifurcation, dot, and island are exmaples of some of the characteristics used in fingerprint identifications, which are known as fingerprint...arrow_forwardA. Use your pencil to find out if the DNA of the suspect agrees with the DNA from the evidence in Figure 5. Circle your answer. YES NO B. Use your pencil to find out if the DNA of the suspect matches the DNA of the evidence in Figure 6. Circle your answer. YES NO E Figure 5 s " E Figure 6 2. In Figures 7 and 8 you will see if there is HORIZONTAL agreement or matching between suspect and evidence. Use your pencil to make these matches. Underline your choice. A. Suspect DNA and Evidence DNA (match, don't match) in Figure 7. A. Suspect DNA and Evidence DNA (match, don't match) in Figure 8. S E Figure 7 1 #11111 11 ||||||| 1 E Figure 8 1271WS4Parrow_forwardHEADGEAR PHYSICAL DESCRIPTION OF PERPETRATORS PERPETRATOR A. Stocking Cap 1. B. Cowboy Hat C. Baseball Cap PERPETRATOR D. Ski or Watch Cap E. Skull Cap F. Beret/Military G. Straw Hat or Fedora H. Masked OUTERWEAR A. Sweatshirt or Jogging Jacket B. Leather, Suede or Fur Trimmed C. Military D. Ski Jacket Gang, Team or School Jacket 2. E. F. Sweater or Vest G. Overcoat or Topcoat H. T-Shirt or Tank Top OTHER CLOTHING ACCESSORIES HEADGEAR COLOR (see color codes below) PERPETRATOR 1. 2. OUTERWEAR COLOR (see color code below) PERPETRATOR 1. 2. PERPETRATOR A. Messy/Dirty/Torn Clothes H. Dress/Skirt B. Well Dressed 1. Scarf/Bandana C. Slacks J. Jewelry (specify) 2. PERPETRATOR D. Shorts E. Jeans F. Uniform/Work Clothes G. Sweat/Jogging Pants FOOTWEAR K. Tools or Keys L. Bag or Briefcase M. Glasses 1. 2. 1. 2. PERPETRATOR A. Jogging Shoes B. Dress Shoes C. Work or Hiking Shoes D. Cowboy Boots E. Sandals F. Barefooted IMPERSONATION OF: A. Law Enforcement Officer B. Security Guard C. Male D.…arrow_forward
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