What nitrogen base is found on rna but not dna?

DNA and RNA are both comprised of nucleotides that bind to a sugar backbone. The DNA nucleotide bases include adenine, cytosine, guanine and thymine. The RNA nucleotide bases include adenine, uracil, guanine and cytosine.

Uricil is only found on RNA but is not found on DNA

1. true.2. true.3. true.4. false.5. true.the concept of darwin's theory of evolution involves the idea that there are limited resources in a given living environment and that the organisms which live within have variations in their genetic make up due to random mating. the ones with beneficial genetic variations can express certain traits which give them an upper hand in surviving and reproducing in the said environment compared to ones who may have a more disadvantageous variation in traits. over time, the organisms with an upper hand will survive and reproduce more frequently and pass on their beneficial genes while the others die. the result is evolution, where we observe (usually, but not always) eventually, phenotypic distinct changes.

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