I think Quanta had an article about that too: https://www.quantamagazine.org/puzzle-solution-are-genes-selfish-or-cooperative-20170929/ https://www.quantamagazi

I think Quanta had an article about that too: https://www.quantamagazine.org/puzzle-solution-are-genes-selfish-or-cooperative-20170929/ https://www.quantamagazine.org/puzzle-solution-are-genes-sel... Without genetic diversity, no source of mutation, no evolution. Hence why non-selfish genes still exist.