Psychedelic trance developed directly out of Goa trance as its successor genre
Goa trance (early 1990s, Goa, India) is the direct ancestor of psychedelic trance (psytrance): ‘Psychedelic trance developed from Goa trance.’ The source ties the two through a shared low end — Goa trance often has drone-like basslines similar to the techno minimalism of 21st-century psytrance — so the pair is best understood as forerunner and successor sharing a sustained, minimal-shifting bass, with psytrance the later, more techno-minimal continuation. Finer contrasts (kick hardness, arrangement density) are scene lore this article does not spell out, so avoid over-claiming a checklist of differences beyond the drone-bass thread and the direct descent.
Examples
A sustained, slowly-morphing bass that stays on one root while everything above it changes — the drone-bass thread the article draws from Goa trance through to psytrance. Nitzhonot is named as another Goa-trance derivative.
Assessment
State the genealogical relationship between Goa trance and psytrance and name the low-end trait the source says links them.