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<big><center>[[Reproductive_System#Reproductive_Technologies|'''BACK TO REPRODUCTIVE TECHNOLOGIES''']]</center></big>
 
<big><center>[[Reproductive_System#Reproductive_Technologies|'''BACK TO REPRODUCTIVE TECHNOLOGIES''']]</center></big>
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* Research tool
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* Applied in humans to identify males where there is a known risk of X-linked disease.
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* One cell of the early embryo is removed and the DNA is amplified by Polymerase Chain Reaction (PCR).
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* DNA is probed for DNA sequences unique to the Y chromosome, indicating a male embryo.
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