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Created with Fabric.js 1.4.5 DNA fingerprinting By: Juanita Sanchez and Mariana Aguirre History How it is use to catch criminals? ' The DNA profiling was created by Sir Alec Jeffreys in 1958at the University of Leicester in England. The DNA profile of a person is determine by the sequence of the nucleotide bases. However, there are more than 3 billion base pairs in each body, but Sir Alec provided a short cut for the DNA profiles and its on the fact that there are a number of highly repetitive sequences that vary among individuals. This helps the process to be faster and easier for finding match with the criminals. The forensics use a reference sample from the suspect using the most common and desirable method which is by the buccal swab as it reduces the possibility of contamination. There art other types of collecting the references like: a sample of blood, saliva, semen, or other appropriate fluid or tissue. Then the reference uses one of the three techniques: RFLP, PCR and STR analysis which is then analyzed to create the individual's DNA profile. Then this sample is compared to another sample, in this case found in the crime scene to determine whether there is or not a genetic match. There is another type of finding the criminals and is by using a relative DNA thanks their DNAS are similar, eventually the criminal will be found thanks the relative. There are another types of collecting the sample and is by using the existing data bases. . Over the world there are nearly 13 data bases of DNA profiles. Curious Facts 1 million bases of DNA sequence data is roughly equivalent to 1 megabyte of computer data storage space. Our entire DNA sequence is called a genome.. and theres an estimated 3,000,000,00 DNA bases in our genome. If you unwrap all of the DNA you have in all your cells, you could reach the moon 6,000 times. It would take a person typing 60 words per minute, 8 hours a day, around 50 years to type the human genome. Humans and chimps share around 94-99% of heir DNA. According to recent research, humans have at least 1-4% Neanderthal DNA. Maine, Rhode Island, North Dakota and Utah dont accept DNA fingerprinting as evidence in court.
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