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added blood typing and references
A '''paternity test''' is used to ascertain who is the [[father]] of another person. It is frequently done by [[DNA]] analysis of the [[child]] and the possible father. Since a person's DNA is the same in all of their cells, DNA testing can be done with a [[blood]] sample, a swab of [[skin]], or a lock of [[hair]]. A comparison of two people's DNA sequences will indicate the extent to which they are biologically related. Paternity tests make it more difficult for fathers to escape their responsibilities.
A '''paternity test''' is used to ascertain who is the [[father]] of another person. It is frequently done by [[DNA]] analysis of the [[child]] and the possible father. Since a person's DNA is the same in all of their cells, DNA testing can be done with a [[blood]] sample, a swab of [[skin]], or a lock of [[hair]]. A comparison of two people's DNA sequences will indicate the extent to which they are biologically related. Paternity tests make it more difficult for fathers to escape their responsibilities.
Prior to the DNA test a paternity test would be done by getting the blood type for the child, mother and potential father. This test could '''exclude''' a man as the father only. Since there are obviously many men with the same blood type it was not possible to prove which was the father.
Both DNA and blood typing tests can be used to determine the '''mother''' of the child.
==References==
* [http://www.drgreene.com/21_1003.html Blood Typing]
* [http://www.gtldna.com/dna-testing-for-paternity.html DNA Testing]
[[category:genetics]]
[[category:genetics]]
[[category:genealogy]]
[[category:genealogy]]