Which group contains only molecules that are each assembled from smaller organic compounds

Draw the structure of dna nucleotide with adenine as nitrogenous base

Transposon can cause mutations in genes at or near the site of transposon insertion. it is possible for these elements to transpose away from their original site, causing a reversion of the mutant phenotype. in some cases, however, even more severe phenotypes appear when these elements excise from this site, due to events at or near the mutant allele. what might be happening to the transposon or the nearby gene to create more severe mutations?

What is referred to as universal solvent due to which factors?