Abstract Are you interested in the technical and ethical aspects of genetic screening, forensic science, and DNA fingerprinting? Scientists use different forms of a gene, called alleles, to differentiate between two fingerprints. One such sequence used in human DNA fingerprinting is the Alu repeat (a 300 base pair repetitive sequence of DNA) on chromosome 16. During evolutionary time, up to 1 million copies of the Alu repeat have become randomly inserted throughout the human genome. Within a specific region on chromosome 16 called PV92, some of us carry an Alu repeat and some of us do not. Such small variations among individuals' genotypes are inherited. These variations are the raw material for natural selection and evolution. These subtle variations in our DNA also provide evidence about our ancestry and form the basis of personal identification via DNA fingerprinting. You can investigate these alleles in your family with the PV92 PCR Informatics Kit (Catalog #166-2100EDU) from the Bio-Rad Biotechnology Explorer Program. Which alleles are present in your family? Can you test a larger group of people and study population genetics? Do the alleles differ according to ancestry? You can extend this kit by using primers for other alleles. How does this change the fingerprint? Do you think the quality and unique identity of the fingerprint will improve as more specific alleles are used? Remember that most science fairs require Scientific Review Board approval for experiments that involve human subjects. (Bio-Rad, 2006)Bibliography Bio-Rad, 2006. "Biotechnology Explorer Program," Bio-Rad Laboratories [accessed 3/25/06] http://explorer.bio-rad.com.Materials and Equipment Note: Bio-Rad Kits are sold directly to schools. To purchase, please have your school contact Bio-Rad at 800-424-6723 to verify account information and to place the order for you. Existing accounts will have orders processed within a day, and establishing an account will take approximately 48 hours.Variations
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If you like this project, you might enjoy exploring related careers.
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Genetic Counselor Many decisions regarding a person's health depend on knowing the patient's genetic risk of having a disease. Genetic counselors help assess those risks, explain them to patients, and counsel individuals and families about their options. |
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Biological Technician What do the sequencing of the human genome, the annual production of millions of units of life-saving vaccines, and the creation of new drought-tolerant rice varieties have in common? They were all accomplished through the hard work of biological technicians. Scientists may come up with the overarching plans, but the day-to-day labor behind biotech advances is often the work of skilled biological technicians. | |
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Anthropologist Where do we come from? Why do we walk upright? Why do we behave the way we do? These are just some of the big and fascinating questions that anthropologists try to answer. Anthropologists study all aspects of human life, in every region of the world, throughout all time. They might focus on everything from present-day cultures and human behavior, traditions, and prehistoric cultures to the biology and evolution of humans, or the origin and evolution of language. |
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Forensic Science Technician Guilty or not guilty? The fate of the accused in court lies with the evidence gathered at the crime scene. The job of the forensic science technician is to gather evidence and use scientific principles and techniques to make sense of it. It can be a grueling and graphic job, but very rewarding. If you like the idea of using science to help deliver justice, then you should investigate this career. | |
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