Sample Sentences forguanine (editor-reviewed)
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A gene has millions of bases, but they are just combinations of A, T, C and G (adenine, thymine, cytosine and guanine).guanine = one of the four chemical bases that make up DNA
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Guanine always pairs with cytosine in the DNA double helix.
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The guanine-cytosine bond is the strongest base pair in DNA because it has three hydrogen connections instead of two.
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The mutation occurred when a guanine in the DNA sequence was accidentally replaced by another base during cell division.
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Notice the sequence is made up of four basic compounds—adenine, thymine, guanine, and cytosine.† (source)
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