[Solved] What functional groups are involved in a Claisen condensation? A)two ketones B)a ketone and an ester C)an aldehyde and an ester D)two esters Phenotype: The observable characteristics or traits of an organism, resulting from the interaction of its genotype with the environment. Visible Structure: The physical or organizational form of something as it appears to the naked eye. Organism's: Refers to any individual living entity, from single-celled microorganisms to plants and animals, including humans. Observable Characteristics: Traits or features that can be seen or measured directly.