Eli5: We have a dna correction system to avoid variations, but, sexual reproduction to promote variations. So, Are variations good?
In: Biology
We’re talking different kinds of variations here. Let’s say that you need bread to live. So you find a recipe to make your own bread. But what if you’re unable to get one of those ingredients. So you get multiple different recipes that have different ingredient substitutions so you always have a way of making bread. So if something happens where there’s a shortage of an ingredient, you can still produce the thing you need to survive.
That’s one kind of variation. Let’s look at another. In this variation we randomly change some of the letters that makes the ingredients and or instructions unintelligible. Now you can’t make bread at all and you die.
The variations in our genome that are beneficial are of the first kind. They are different ways of doing things that allow us to survive and provide more ways of overcoming random things that might happen to us in life. Mutations are of the second variety and the most common effect is that they just make DNA not work at all.
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