satireplusplus t1_ja9vh89 wrote
Reply to comment by HegemonNYC in Revealed: Europe's Oldest Humans had Surprisingly Frequent Intermingling with Neanderthals by OptimalCrew7992
It's not the same, but somewhat similar. While they were not entirely sterile, it's likely that 1st generation neanderthal+sapiens had trouble making (male) babies as well:
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