Recent Examples of guanine from the Web
Each chromosome is made up of a molecule of DNA in the shape of a double helix which is composed of four chemical bases represented by the letters A (adenine), T (thymine), G (guanine) and C (cytosine).
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Origin and Etymology of guanine
guano + -ine; from its being found especially in guano
First Known Use: 1850See Words from the same year
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Britannica.com: Encyclopedia article about guanine
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