Day: March 6, 2025

it could be their ‘silent’ X chromosomeit could be their ‘silent’ X chromosome

March 6, 2025| admin|

Women usually have two X chromosomes (shown here in an artist’s rendering), and one of them is inactivated early in development.Credit: Cavallini James/BSIP/Alamy Women tend to live longer than men

Systematic bone tool production at 1.5 million years agoSystematic bone tool production at 1.5 million years ago

March 6, 2025| admin|

Harmand, S. et al. 3.3-Million-year-old stone tools from Lomekwi 3, West Turkana, Kenya. Nature 521, 310–315 (2015). Article CAS PubMed Google Scholar Proffitt, T. et al. Wild monkeys flake stone