At a genetic level, what is responsible for difference observed between two maple trees?

prism b but im not for sure

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

the three components of a nucleotide are the nitrogenous base, the phosphate group and the five-carbon sugar.