Slimak Rebuts 250,000-Year Neanderthal 'Love Story' Claim as DNA Shows Uneven X-Chromosome Transmission
Updated
Updated · ScienceDaily · Jul 7
Slimak Rebuts 250,000-Year Neanderthal 'Love Story' Claim as DNA Shows Uneven X-Chromosome Transmission
1 articles · Updated · ScienceDaily · Jul 7
Summary
250,000-year-old interbreeding signals do not show Neanderthal men preferred Homo sapiens women, Ludovic Slimak argues; they show only uneven inheritance, especially depleted Neanderthal DNA on the X chromosome.
The Science study itself tested several explanations—natural selection, sex-biased demography and partner preference—and treated preference as only a parsimonious model, not direct evidence of attraction or lived social behavior.
El Sidrón in northern Spain, where 3 adult males shared one maternal lineage while 3 females had different ones, instead points to female mobility and possible patrilocal social organization among Neanderthals.
That social reading complicates the romance narrative further because later genomes show one-way recent gene flow from Neanderthals into early Eurasian sapiens, not recent sapiens ancestry in the last Neanderthals.
Slimak says genes can trace transmission but not alliances, coercion, exchange rules or conflict, making archaeology and anthropology essential to explain how Neanderthal-Sapiens contact actually worked.