Progenesis is a biological phenomenon where an organism reaches sexual maturity at an earlier developmental stage than usual. This process can occur in various species, including some amphibians and insects. Progenesis allows these organisms to reproduce while still retaining juvenile characteristics, which can be advantageous in certain environments. In evolutionary terms, progenesis can lead to changes in species over time, as traits from juvenile forms may be passed on to future generations. This can result in unique adaptations and variations within a population, influencing the overall dynamics of ecosystems and the evolution of species.