DNA Fingerprinting Essay

DNA Database In 1974, a 19 year old man named James Bain was wrongly convicted of both rape and kidnapping. He was accused of raping a little boy on a baseball field in Florida. A piece of DNA was left at the scene, but the trial occurred before DNA testing was available. Although Bain could not be directly linked to the piece of DNA, blood types could be compared. The perpetrator’s blood type was a match for Bain’s. James Bain was found guilty at his trial, and was sentenced to life in prison. He

stranded sequences in the DNA, which are also known as palindromes (meaning that they read the same in opposite directions) Polymorphisms are when one gene has multiple alleles and cause morphs in different organisms. RFLP stands for Restriction Fragment Length Polymorphisms. RFLPs are used to distinguish between people’s DNA. This is because since the distance between the repeated palindromic recognition sites vary from person to person, the amount of repeats within all the DNA differs too. When the

possessed deoxyribonucleic acid, or DNA, that could be analyzed to match possible suspects whose DNA matched that found at the crime scene. Almost every cell in our body contains DNA. It is a hereditary material located in the nucleus. “The information in DNA is stored as a code made up of four chemical bases: adenine (A), guanine

“Deoxyribonucleic acid, or DNA is the molecule that transports most genetic instructions utilized in the growth, function and biological process of all living organisms and many viruses.” (Merriam-Webster Dictionary) It was first discovered at the University of Tübingen by Friedrich Miescher in 1869. Miescher discovered DNA through a microscopic substrate in a sample of pus on unwanted surgical gauze. (Dahm) Nature is a scientific journal in Britain, where studies and academic research in scientific

Length Polymorphism (RFLP) to analyze Deoxyribonucleic Acid (DNA). Dr. Jeffreys discovered that repetitive patterns of DNA, known as Variable Number of Tandem Repeats (VNTRs), were present in all human beings but that they were different, everyone has different patterns. Later on during his investigation he realized that this variation could be used to establish the identity of a person and he then named his discovery genetic fingerprinting. Dr. Jeffreys was able to demonstrate that a genetic fingerprint

What is DNA? We all know that DNA can be found in our blood and tissue, but we don’t really know about the history of it and what good it can do for crime investigations. DNA was discovered in 1953 by two young scientists named James Watson and Francis Crick’s. DNA is what basically makes us up and it can be found all around us. DNA has helped out the government throughout the years in many ways, such as helping them figure out who is responsible for such heinous acts of violence. All from when DNA

Comparing Suspect DNA to Crime Scene Samples with Gel Electrophoresis Christopher Davis Lab Partners: Jessica Roubert and Aishat Alimi TA: Tam-Anh Phan BSC 2010L Section: 033 November 1, 2014 Materials and Methods Restriction Enzyme Digest and Preparation of the DNA Samples Four microcentrifuge tubes were placed in a rack, labeled and numbered, in order to identify the group and the DNA/restriction enzyme that it held. Each of the tubes initially received 10 microliters of reaction buffer

repeating DNA sequence. Since different people have different number of repeat units, these regions of DNA can be used to discriminate between individuals. The more STR regions that are tested in an individual, the more discriminating the test becomes. DNA fingerprint is based on the theory of finger prints which was discovered in India in 1897. A DNA fingerprint signifies characteristic patterns of pieces of

Chemicals make up DNA? When analyzing DNA it is important to understand it and all the chemicals that it is made of. The first thing that’s important to know is simply what DNA stands for, which is deoxyribonucleic acid. The chemical units are called nucleotides, and each nucleotide has a compound of phosphate sugar which is the backbone, and a sugar deoxyribose. The Phosphates and sugars are the same in all nucleotides but the one thing that is different would be the bases. DNA bases are cytosine

Fingerprinting and blood testing are two types of assessments to make a positive identification of a criminal. Since everybody’s fingerprints are diverse, it is easy to compare them through a computerized program that forensic scientists use. In order to prove if the DNA of a victim and a criminal match, there are steps that must be followed carefully and correctly. There are many reasons why fingerprinting is used as an important methods for identification (Hall, 2015). As stated by Hall (2015)