What is the genetic basis for all inherited traits and has been the single greatest advance for law enforcement in solving cases? Group of answer choices Fingerprints Bodily fluids DNA Dental records
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Inherited traits are determined by genes, which are segments of DNA. Show more…
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A crime was committed at Luna State College this past year. An unknown individual stole a valuable gemstone from the Department of Natural Science rock collection. The culprit left behind his/her fingerprints on the floor tile where the gem was displayed. Hair samples were also recovered from the floor tile. The Luna State Campus Police have access to CODIS (Combined DNA Index System), a national DNA database of criminals, missing persons, and unidentified persons (operational since 1998). Fingerprint types Loopy Swirly Whirly Curvy You are tasked with designing an experiment to help the campus police. You must use current molecular biology techniques, such as the ones used in this laboratory exercise. In addition, you should include one of the traditional crime-solving methods, such as identifying fingerprints (see pictures below), to help you develop your experimental design. COMPONENTS OF YOUR EXPERIMENT Question Hypothesis Dependent Variable Design an Experiment
Josee P.
Applications of DNA Polymorphisms in DNA Typing (DNA typing is also referred to as DNA Fingerprinting or DNA Profiling) Paternity Analysis Analysis of VNTR loci has been used in the past to establish paternity in cases where the biological father of a child is in question. Below are the DNA fingerprints of five people in such a case: the child (C), the mother (M), and three potential fathers of the child (F1, F2, F3). In this experiment, the total DNA of each individual was cut with a restriction enzyme ran on three gels, and Southern blotted. Each blot was probed with a radioactive probe to different VNTR loci (A, B, and C) and the results are shown below. For interpretation of the gel below, you must first compare the child's DNA fragments to the mother (because this is a known parent). The fragment that does not match the mother MUST have come from the father. To increase the statistical probability that we find a potential father you are using three different VNTR loci. This means that the potential father MUST match the child on all three gels. 9. Identify the potential father(s). VNTR A probe VNTR B probe VNTR C probe Crime Scene Investigation: DNA Forensics Analyze the gel image below that represents of a crime scene analysis. The first lane (L) represents an allele ladder. Identify the genotype of the DNA samples given and determine which suspect(s) can or cannot be rules out of the investigation.
Jenny W.
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