3 ms·
Antibiotics and sanitation have dramatically changed the fitness landscape and humans haven't accumulated enough generations in the new landscape to adapt genet
by biomcgary 2y ago
Antibiotics and sanitation have dramatically changed the fitness landscape and humans haven't accumulated enough generations in the new landscape to adapt genetically.
Natural selection is for reproductive fitness. Before antibiotics, dying after child bearing years didn't have enough effect on fitness to overcome the value of preventing death from infection at younger ages.