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DNA fingerprinting
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Fluorescent bands of DNA separated by size appear as horizontal yellow-green lines on a blue gel, showing results of DNA fingerprinting.
Learn how a genetic fingerprint is made using agarose gel, Southern blotting, and a radioactive DNA probe
How the DNA Thermal Cycler Uses PCR to Copy DNA Strands
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greylag. Flock of Greylag geese during their winter migration at Bosque del Apache National Refugee, New Mexico. greylag goose (Anser anser)
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DNA helix in a futuristic concept of the evolution of science and medicine.
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DNA fingerprinting: Media

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Learn how a genetic fingerprint is made using agarose gel, Southern blotting, and a radioactive DNA probe
Learn about how DNA is extracted, treated with restriction enzymes, and sequenced...
Video: Encyclopædia Britannica, Inc.
How the DNA Thermal Cycler Uses PCR to Copy DNA Strands
Learn how specific segments of DNA are amplified (copied) in a laboratory using polymerase...
Video: Encyclopædia Britannica, Inc.

Images

In DNA fingerprinting, fragments of DNA are separated on a gel using a technique...
© Jarrod Erbe/Shutterstock.com
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