Mutational Meltdown and Mueller's Ratchet

Robyn Curnow: Mutational meltdown or Mueller's Ratchet violates simple assumptions about evolution on a surface level. She says it makes reference to idea of harmful genetic mutations accumulating over time in the species. But under certain circumstances, bad genes can accumulate, and she argues that this is due to random chance rather than natural selection. "If you think about gambling, imagine you're making bets on somebody flipping a coin"