Neanderthal-ized brain organoids (left) look very different than modern human brain organoids (right) — they have a distinctly different shape, and differ in the way their cells proliferate and how their synapses form. UC San Diego Health Sciences
https://www.newswise.com/articles/how-a-single-gene-alteration-may-have-separated-modern-humans-from-predecessors?sc=c45