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Understanding
DNA
DNA
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for Kids
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DNA
Science
DNA
Basics Explained
0:54
YouTube
Nexus News
How Does DNA Testing Work?
DNA testing works by analyzing genetic material to identify unique sequences. A sample, typically collected via cheek swab or saliva, is sent to a lab where the DNA is extracted and amplified using polymerase chain reaction (PCR). Scientists then examine specific regions of the DNA, known as genetic markers, to determine relationships, ancestry ...
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