Basics of DNA Fingerprinting
http://www.accessexcellence.org/RC/AB/BA/DNA_Fingerprinting_Basics.php
http://www.thenakedscientists.com/HTML/articles/article/dalyacolumn8.htm/
http://protist.biology.washington.edu/fingerprint/dnaintro.html
Basics of DNA Fingerprinting
By Kate Brinton and Kim-An Lieberman
This page was created as a class project at the University of Washington to provide to the
Internet basic information on the structure and function of DNA as it relates to DNA
fingerprinting. This topic is especially pertinent in today's society because of the rising
use of DNA fingerprinting as evidence in court cases.
CONTENTS:
DNA 101 - What is it?
What is DNA Fingerprinting?
How is DNA Fingerprinting done?
What are the applications of DNA Fingerprinting?
What are the problems with DNA Fingerprinting?
Further reading
Glossary
Thanks to Professor William Moody and Dr. John Medina.
This web site was a class project, written in May of 1994. We are not DNA experts; this
site represents the sum of our knowledge on the subject. We welcome comments but
please do not ask us for further help or information (we have none to offer).
What is DNA Fingerprinting?
The chemical structure of everyone's DNA is the same. The only difference between
people (or any animal) is the order of the base pairs. There are so many millions of base
pairs in each person's DNA that every person has a different sequence.
Using these sequences, every person could be identified solely by the sequence of their
base pairs. However, because there are so many millions of base pairs, the task would be
very time-consuming. Instead, scientists are able to use a shorter method, because of
repeating patterns in DNA.
These patterns do not, however, give an individual "fingerprint," but they are able to
determine whether two DNA samples are from the same person, related people, or nonrelated people. Scientists use a small number of sequences of DNA that are known to
vary among individuals a great deal, and
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Биологически науки
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