Campbell Essential Biology (7th Edition)
7th Edition
ISBN: 9780134765037
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Chapter 12, Problem 4SQ
A paleontologist has recovered a bit of organic material from the 400-year-old preserved skin of an extinct dodo. She would like to compare DNA from the sample with DNA from living birds. The most useful method for initially increasing the amount of dodo DNA available for testing is _____.
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The 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, B
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.
The most common procedure for cloning an animal is __________.
Chapter 12 Solutions
Campbell Essential Biology (7th Edition)
Ch. 12 - Suppose you wish to create a large batch of the...Ch. 12 - A carrier that moves DNA from one cell to another,...Ch. 12 - Prob. 3SQCh. 12 - A paleontologist has recovered a bit of organic...Ch. 12 - Why do DNA fragments containing STR sites from...Ch. 12 - What feature of a DNA fragment causes it to move...Ch. 12 - After a gel electrophoresis procedure is run, the...Ch. 12 - Name the steps of the whole-genome shotgun method.Ch. 12 - Put the following steps of human gene therapy in...Ch. 12 - For each statement, identify which major theme is...
Ch. 12 - Prob. 11IMTCh. 12 - For each statement, identify which major theme is...Ch. 12 - Some scientists once joked that when the DNA...Ch. 12 - Interpreting Data When comparing genomes from...Ch. 12 - Listed below are 4 of the 13 genome sites used to...Ch. 12 - In the not-too-distant future, gene therapy may be...Ch. 12 - Today, it is fairly easy to make transgenic plants...Ch. 12 - 18. In October 2002, the government of the African...Ch. 12 - From 1977 to 2000, 12 convicts were executed in...
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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
- Below is an image of the results of a gel electrophoresis experiment. Lanes 1-4 contain amplified DNA fragments and Lane 5 contains the DNA size marker (DSM). From this image and by only using Lanes 1- 4 which lane matches each description below? a) This lane contains the largest DNA fragment: b) This lane contains the smallest DNA fragment: c) This lane contains a 2.5 kbp DNA fragment: 42 | || ||| | || 12 kb 9.5 kb 6.5 kb 4 kb 2 kb ***arrow_forwardCan you please check my answer and make sure it is correct. Question: How can DNA evidence be used to convict or exonerate a defendant? Why is DNA evidence so powerful? Answer: DNA evidence can be used to perform DNA profiling to determine the genotype of the specific DNA sample. With just a small amount of DNA, PCR can produce billions of copies of that specific segment. The segments that are used are from non-coding regions that contain STR’s or short tandem repeats. These very short DNA sequences are repeated and are specific to individuals because we inherit them from our mother and father. Gel electrophoresis separates the PCR products based on their size and each band is compared to the allele ladder. This process helps to identify the alleles present in the original samples. DNA profiling is performed at many loci to be able to tell the genetic difference between different individuals with a lot of certainty. The DNA from the different suspects is compared to the allele…arrow_forwardWhy do you need to put the reagents in the reaction tubes into the tubes in a specific order for DNA fingerprint analysis? Explain what the order , and why it was necessary.arrow_forward
- There are two tubes: tube 1 and tube 2. They contain the same DNA sample but different concentration isolated from corn chips in a local restaurant. Tube 1 sample has a Ct value of 10 and tube 2 sample has a Ct value of 20. a. Which tube has a higher starting quantity, tube 1 or tube 2? b. The starting quantity in tube 1 is ________(enter a numerical number) fold (choose one: higher or lower) than that of tube 2.arrow_forwardDNA ________ Depends on Differences in Length of Simple-Sequence DNAs.arrow_forwardBrenda is a junior student in the biomedical program at her school. She is starting the PCR genetic testing lab activity. She is about to obtain her DNA sample but doesn’t want like the taste of NaCl solution. Her friend, Mark, let her use some of his DNA. What laboratory tule did the students break? A. Obtaining and handling DNA sample without wearing googles or gloves B. Improper use of human DNA samples C. Violating Patient Confidentiality D. Disposing of bio hazardous material in a regular trasharrow_forward
- A body was found in an apartment in a downtown San Diego high-rise. To solve this murder, forensic scientists were brought in to analyze any evidence that might be found. The victim of the crime had only one piece of evidence on it: a bite mark. Crime scene techs recovered a small amount of saliva from this bite mark and, using DNA fingerprinting RFLP analysis, compared the DNA from this saliva to the DNA from 4 potential suspects, all who looked pretty guilty. The results of this analysis are shown below: Key: Victim (V) - A chihuahua Bite mark DNA (B) - from the suspect! Suspect 1 (S1) - A dachshund Suspect 2 (S2) - A pomeranian Suspect 3 (S3) - A Yorkshire terrier Suspect 4 (54) - A schnauzer Based on these results, which suspect, if any, committed this crime? (Hint: compare the DNA found on the bite mark with the DNA from the suspects. The ladder is provided as a reference point.) s2 Ladder B s1 S3 S4 S3 None of these suspects committed this crime 52 51 54arrow_forwardsample containing at least one molecule of DNA serves as the starting material for PCR. True Falsearrow_forwardPositional cloning identifies DNA______________s that arelinked to disease genes.arrow_forward
- From what Human Remains may it be possible to recover DNA?arrow_forwardCould actual fingerprints taken from human fingers be used toperform a DNA profile? Explain.arrow_forwardWhen forensic experts work with a blood sample, what part of it do they use for PCR; red blood cells, white blood cells, or proteinaceous antibodies? If trying to find a tandem repeat segment, why would you pick one choice other another?arrow_forward
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DNA Use In Forensic Science; Author: DeBacco University;https://www.youtube.com/watch?v=2YIG3lUP-74;License: Standard YouTube License, CC-BY
Analysing forensic evidence | The Laboratory; Author: Wellcome Collection;https://www.youtube.com/watch?v=68Y-OamcTJ8;License: Standard YouTube License, CC-BY