progenesis

The term "progenesis" in biology refers to the acceleration of sexual maturation relative to the rest of an organism's development. This is one aspect of a broader concept called paedomorphosis, which is the retention of juvenile or larval traits into adulthood.1

In essence, an organism that exhibits progenesis becomes reproductively capable while still retaining juvenile physical characteristics. This can lead to the persistence of larval forms and habits into maturity, as seen in some amphibian species. Paedomorphosis, including progenesis, is considered a significant factor in evolutionary processes, potentially giving rise to new organisms over time.1