a
(adenine, A)
Princeton's WordNet
(biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA
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adenine
(adenine, A)
Princeton's WordNet
(biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA
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u
(u)
Random House Webster's College Dictionary
uracil.
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uridine
(ˈyʊər ɪˌdin, -dɪn)
Random House Webster's College Dictionary
a ribonucleoside composed of ribose and uracil.
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pyrimidine
(ɪˈrɪm ɪˌdin, pɪ-)
Random House Webster's College Dictionary
one of several pyrimidine derivatives, esp. the bases cytosine, thymine, and uracil, which are fundamental constituents of nucleic acids.
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base
(ɪs)
Random House Webster's College Dictionary
Genetics. any of the purine or pyrimidine compounds that constitute a portion of the nucleotide molecule of DNA or RNA: adenine, guanine, cytosine, thymine, or uracil.
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nucleoside
(ˈnu kli əˌsaɪd, ˈnyu-)
Random House Webster's College Dictionary
any of the class of compounds derived by the hydrolysis of nucleic acids or nucleotides, consisting typically of deoxyribose or ribose combined with adenine, guanine, cytosine, uracil, or thymine.
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rna
(ˈrɪt siˌoʊ, ˈrit-)
Random House Webster's College Dictionary
ribonucleic acid: any of a class of single-stranded nucleic acid molecules of ribose and uracil, found chiefly in the cytoplasm of cells and in certain viruses; important in protein synthesis and in the transmission of genetic information transcribed from DNA.
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nucleotide
(ˈnu kli əˌtaɪd, ˈnyu-)
Random House Webster's College Dictionary
any of a group of molecules that, when linked together, form the building blocks of DNA or RNA: in DNA the group comprises a phosphate group, the bases adenine, cytosine, guanine, and thymine, and a pentose sugar; in RNA the thymine base is replaced by uracil.
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base pair
(base pair)
Princeton's WordNet
one of the pairs of chemical bases joined by hydrogen bonds that connect the complementary strands of a DNA molecule or of an RNA molecule that has two strands; the base pairs are adenine with thymine and guanine with cytosine in DNA and adenine with uracil and guanine with cytosine in RNA
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