Os dejo un par de enlaces a este estudio:
https://www.sciencedaily.com/releases/2017/12/171214140442.htm
http://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1007098#sec014
Básicamente han seleccionado artificialmente moscas de la fruta con menor necesidad de sueño y han encontrado relaciones genéticas con esta necesidad.
Por lo que arrojan las conclusiones del estudio, la poca necesidad de sueño es un factor de mala adaptación que desaparece sin una presión específica:
We found that the response to selection was asymmetrical and stronger in the direction of reduced sleep, suggesting that short sleepers are less fit. Consistent with this finding, the short sleeper populations had increased sleep after 47 generations of relaxed selection, suggesting that very short sleep duration might be difficult to maintain in nature, except when strong selection pressure is present. We also noted that fewer short sleepers survived the sleep assay in later generations of selection, which may also be an indication that short sleepers are less fit.
¿Qué os parece?