Muller's ratchet

A Ratchet in evolution. See https://xkcd.com/2464/

“a process in which absence of recombination, especially in an asexual population, results in accumulation of deleterious mutations (harmful mutations) in an irreversible manner.” https://en.wikipedia.org/wiki/Muller%27s_ratchet

How is this related to Clonal interference?