Definition
Neo-Lamarckism is an evolutionary theory based on the idea that acquired characteristics can be inherited. Unlike Darwinism, which emphasizes random variation and natural selection, neo-Lamarckism suggests that organisms can pass on traits gained during their lifetime to their offspring. For example, if a giraffe stretches its neck to reach higher leaves, its offspring would inherit a slightly longer neck. This contrasts with the modern understanding of genetics, where changes in DNA are the primary source of heritable variation. Think of it like directly saving a level-up in a video game to your character's DNA. However, modern genetics largely disproves this.