DNA by Natalie Hyde

By Natalie Hyde

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The odds of matching all 13 locations are one in 53 quintillion! 35 Chapter 5 DNA in Our Lives Although we still do not know all the real functions of non-coding DNA, researchers have found an important use for it. It is the best way to identify people. Because so much of our genetic code is the same, our genes are not a good way to tell us apart. Junk DNA is very different from person to person, however. In non-coding DNA are sections that repeat the same bit of code over and over again. They are called short tandem repeats or STRs.

5. 6. In the container, mix detergent, salt, and water. Place one strawberry in the Baggie. Smash strawberry with fist for two minutes. Add 1/5 of detergent mix to the bag. Smash again for one minute. Filter using cheesecloth or a coffee filter through a funnel into a test tube. 7. Holding the test tube at an angle, slowly pour the icecold alcohol into the tube until the test tube is half full. 8. Watch the DNA come out of the solution and float to the top. 9. You may try spooling the DNA on your glass rod or straw.

Investigators are also on the hunt for poachers. They test the DNA of blood found at the scene of an illegal hunt. They compare that DNA to the meat in a suspected poacher’s freezer or skins hanging on the poacher’s walls. Investigators check that leather is not made from endangered animals. In the Lab Ancient Mysteries DNA is helping to unravel some of our oldest mysteries. In Egypt, the DNA of a mummy in a dusty tomb has been examined. Researchers are trying to prove that she is Queen Hatshepsut.

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