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Joined 1 year ago
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Cake day: July 1st, 2023

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  • Oh no, rate of mutation is definitely a thing and is controlled by several factors. A big one is generation time, which is what it sounds like, the time between each generation. The copying of DNA is a source of mutations. This is why many controlled experiments on evolution are done with bacteria, who have super low generation times. For example, depending on temperature, the generation of many salmonella species is around 20-30 minutes. That lets you crank out massive numbers of potential mutations, then introduce a selective pressure, like an antibiotic the species normally isn’t resistant to or an energy source it normally can’t utilize, and see what happens.

    To answer your question, yes, a higher mutation rate would confer an advantage. To a point. Most mutations are deleterious and usually lead to death, a few are benign and do nothing (at that point), and a very rare few are immediately advantageous. As long as the rate of mutation isn’t so high that the deleterious mutations combined with whatever other pressures are wiping out the population, more mutation means more chances to have the right trait to deal with a novel pressure or, very rarely, do something better.


  • To preface, I’m a microbiologist, so I have skin in the science game. I hate how these articles often have science illiterate authors or authors who are imprecise with their wording. They repeat misinformation on basic topics that science educators have been striving to correct for decades, perpetuating the cycle.

    …the study shows once again how evolution throws up multiple solutions to basic problems…

    In this case, it’s the “mysterious force of evolution that whips up solutions to problems”. Evolution doesn’t create solutions. There is no guiding force behind evolution.

    Evolution through natural selection selects for existing solutions that were generated randomly through mutation, increasing the frequency of that trait because those without either die or are outcompeted. What happens if a trait is required for survival but no organisms have it? They all die. That’s why over 99% of all multicellular species that have ever lived on Earth are extinct. If you include microbes, make that 99.99999%.




  • Vote inertia and dog piling. I’ve seen it happen so many times. If you are voted to the negatives, it’s less likely you’ll receive many positive votes unless you receive enough to tip you back into positive numbers or someone points out that other, similar comments aren’t being down voted. The converse is also true, although the follow up comment phenomena seems not to hold.

    I’ve even experimented with it on Reddit, way back. I’d leave a comment I know would be well received, then edit it to make it poorly received, but not so awful that it’d get mobbed. It’d usually keep going up, albeit less quickly, or sit stagnant.

    On the flip side, I’d leave a shitty comment, then change it to a paraphrasing of a different, very well received sentiment once it was around -3 to -5. Despite the notion being well received elsewhere, the negative votes kept rolling in unless someone pointed out the collective hypocrisy in a follow up comment.

    Tl;dr: Lemmy is run by bipedal, social apes whose behavior and opinions are biased by the perceived opinions of their fellow apes. This bias can sometimes be overcome by pointing it out.