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katovenus [111]
3 years ago
8

What is the double helix?

Biology
1 answer:
WARRIOR [948]3 years ago
4 0
A pair of parallel helices intertwined about a common axis, especially that in the structure of the DNA molecule.

that is the definition^
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When Darwin returned to England aboard the HMS Beagle after his voyage to the Galapagos Islands, he used artificial selection to help gather data to justify his theory of evolution. After studying the finches on the islands, Darwin moved to raising birds, notably pigeons, back home to test his theories.

<h3>What, according to Darwin, is artificial selection?</h3>

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