
1) Cosmetics chemical 2) Pairs with cytosine 3) Purine 4) Type of nucleotide
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https://www.crosswordclues.com/clue/guanine

Guanine n (G, Gua) is one of the four main nucleobases found in the nucleic acids DNA and RNA, the others being adenine, cytosine, and thymine (uracil in RNA). In DNA, guanine is paired with cytosine. With the formula C5H5N5O, guanine is a derivative of purine, consisting of a fused pyrimidine-imidazole ring system with conjugated double bonds. Be...
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http://en.wikipedia.org/wiki/Guanine

an organic compound belonging to the purine group, a class of compounds with a characteristic two-ringed structure, composed of carbon and nitrogen ... [7 related articles]
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http://www.britannica.com/eb/a-z/g/77

A chemical compound that is used to make one of the building blocks of DNA and RNA. It is a type of purine.
Found on
http://www.cancer.gov/dictionary?expand=G

A purine base. Guanine (2-amino-6-oxypurine) is one of five organic bases found in the nucleic acids of cells. It pairs with cytosine in both DNA and RNA. Guanine is named for its occurrence in guano, a natural fertilizer composed mainly of the excrement of sea bird.
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http://www.daviddarling.info/encyclopedia/G/guanine.html

<biochemistry, molecular biology> One of the constituent bases of nucleic acids, nucleosides and nucleotides. ... (18 Nov 1997) ...
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http://www.encyclo.co.uk/local/20973

(gwah´nēn) a purine base, one of the fundamental components of nucleic acids (DNA and RNA).
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http://www.encyclo.co.uk/local/21001

(= 2-amino 6-hydroxy purine) One of the constituent bases of nucleic acids, nucleosides and nucleotides.
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http://www.encyclo.co.uk/visitor-contributions.php

One of four chemical bases in DNA, denoted (G), with the other three being adenine (A), cytosine (C), and thymine (T).
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http://www.genesinlife.org/glossary
(Gua, G) Type: Term Pronunciation: gwahn′ēn, -in Definitions: 1. one of the two major purines (the other being adenine) occurring in all nucleic acids.
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http://www.medilexicon.com/medicaldictionary.php?t=38686

Guanine: One of the four bases in DNA that make up the letters ATGC. Guanine is the 'G'. The others are adenine, cytosine, and thymine. Guanine always pairs with cytosine to form the base pair G-C (guanine-cytosine) in the DNA. The other base pair in the DNA is A-T (adenine-thymine). Each base pair forms a rung in the DNA ladder. Guanine is also on...
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http://www.medterms.com/script/main/art.asp?articlekey=3639

[
n] - a purine base found in DNA and RNA
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http://www.webdictionary.co.uk/definition.php?query=guanine

purine nitrogenous base found in nucleotides
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https://courses.lumenlearning.com/microbiology/chapter/glossary/

One of the four nucleotide bases in DNA or RNA; pairs with cytosine.
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https://isogg.org/wiki/Genetics_Glossary

a purine base, CHNO, that is a fundamental constituent of DNA and RNA, in which it forms base pairs with cytosine. Symbol: G&hasp; Cf. guanosine.
Found on
https://www.infoplease.com/dictionary/guanine
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