5-bromouracil is an analog of which base? A: thymine B: uracil C: cytosine D: adenine
5-bromouracil is an analog of which base? A: thymine B: uracil C: cytosine D: adenine
哪些核苷酸碱基存在于RNA中？ A: adenine, guanine, cytosine, thymine B: adenine, guanine, thymine C: adenine, guanine, cytosine, uracil D: sugar, phosphate and base
哪些核苷酸碱基存在于RNA中？ A: adenine, guanine, cytosine, thymine B: adenine, guanine, thymine C: adenine, guanine, cytosine, uracil D: sugar, phosphate and base
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