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Ones height eye color hair color and skin tone are some of the things that can be determined by his or her DNA It is a part of what makes people who they are Blood saliva semen skin cells and hair follicles are some forms of DNA For example saliva could be used when testing for paternity Paternity tests are performed to identify the biological father of a child Although DNA helps one identify the unknown there is more to it when it comes to knowing what it is the four kinds of DNA for genetic genealogy forensic analysis testing its uses for DNA evidence DNA databanks and the future of DNA evidence DNA is referred to as a genetic blueprint by some people According to Genetics Home Reference 2013 DNA or deoxyribonucleic acid is the heredity material in humans and almost all other organisms Genetics Home Reference 2013 also states that the information in DNA is stored as a code made up of four chemical bases which are adenine A guanine G cytosine C and thymine T Human DNA consists of about 3 billion bases and more than 99 of those bases are the same in all people according to Genetics Home Reference 2013 According to Hartman Meshbesher 2012 DNA is the molecule that makes up genes Hartman Meshbesher 2012 also state that DNA contains four different parts called bases which pair up neatly According to Genetics Home Reference 2013 an important property of DNA is that it can replicate or make copies of itself Snedden 2003 has similar findings by stating that each time a cell divides it makes a copy of its DNA Even though DNA is passed down through ones genes it has the ability to do something very uniqueThere are four kinds of DNA for genetic genealogy The first kind is Y-line DNA According to Jestes 2012 Y-line DNA tests the Y-chromosome which is passed from father
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