Human populations have waxed and waned over the millennia, with some cultures exploding and migrating to new areas or new continents, others dropping to such low numbers that their genetic diversity ...

Their results showed an extreme direct loss of diversity due to the bottleneck event and found the overall fitness in the modern population had been impacted. Researchers found three categories of ...

Microbes often display cooperative behavior in which individual cells put in work and sacrifice resources to collectively benefit the group. But sometimes, "cheater" cells in the group may reap the ...

The research team analysed nearly 270 northern elephant seals exploring their entire genetic make-up and comparing pre- and post-bottleneck seals. Their results showed an extreme direct loss of ...