I was reading an article about how blue marmorkrebs are "impossible" due to the offspring being clones of the mother. Couldn't genetic mutations cause changes to phenotype the same way they do in sexually reproducing species, just at a slower rate?
>>2261422
Sure.
Yes, ultimately, mutation is the source of all genetic variation.
>>2261422
looks blue to me!
Yes, absolutely.
Any process that involves meiosis and mitosis invokes potential for mutation.
Are there any known morphs of mourning geckos?
>>2261422
sort of.
you've removed the selective pressure for reproductive fitness, and this is where most mutations become fixed.
So all you're left with is mutations that improve survival fitness becoming fixed.
in sexually reproducing animals most of both types of mutation become fixed via sexual selection because a better survivor is generally a better reproducer.
so not only have we vastly slowed the rate that mutations are accumulated because we're not collecting mutations over an entire population, but we've made it so most mutations that occur won't persist anyways because there's no pressure to keep them and/or most are harmful anyways.
so essentially what we'd expect is to see sexual species evolving extremely quickly, over a period of tens or hundreds of thousands of years. In contrast an asexual species may not change significantly over tens or even hundreds of millions of years.
the difference is meaningless to us since we can't fathom either time frame, but the "slower rate" you mention is MUCH MUCH slower.