The word sophomoric, an adjective dating from 1813, is used to refer to and describe something or someone that is conceited, overconfident, poorly informed and immature, as characterized by a stereotypical high school sophomore. The phrase can be derisive, but is also used to refer to a style or vein of comedic act.
Phenotype: An appearance or characteristic of an individual, which results from the interaction of the person's genetic makeup and his or her environment. By contrast, the genotype is merely the genetic constitution (genome) of an individual.
The genotype is the set of genes in our DNA which is responsible for a particular trait. The phenotype is the physical expression, or characteristics, of that trait. For example, two organisms that have even the minutest difference in their genes are said to have different genotypes.