A neomorphic gene refers to a gene that contains a novel or altered function in comparison to the wild-type gene. Some synonyms for neomorphic gene include dominant gain-of-function mutation, mutant allele, and hypermorph. These terms are used interchangeably in scientific literature to describe variations in gene expression that result in the alteration of an organism's phenotype, or observable traits. Neomorphs have been studied extensively in genetics research due to their potential to shed light on genetic mechanisms that affect developmental pathways, disease susceptibility, and evolutionary adaptations. By understanding neomorphic genes, researchers may be able to develop better treatments for human diseases and gain insight into the complex processes that shape the biology of all organisms.