Should we interbreed with our family members?

Referring back to the opening post: Your understanding of how genotypes expressing themselves in phenotypes seems somewhat incomplete.

You may have "GACATTCA" but, that's not necessarily what you pass on, invariably. Yes, there are dominant, recessive and codominant genes that probably will be passed on, but you (assuming you are male) will have variations in the genes you pass on, because inside your nutsack there is a veritable alphabet soup of variations of your own genes.

So, yes, even tough all humans have similar phenotypes withs light variations there is actually quite a bit of variation within our genotype. It's also important to remember that there is often more variation within a population than between them. Which is why it is genetically benefitial for humans to engage in "interracial" breeding-- that is to say, it counteracts genetic drift which if led to extremes will cause problems.

How ya doing, buddy?

Watts, I think you're confusing evolution with one of the processes behind it.

Evolution is the end result of mutation and natural selection. A lot of mutations aren't benefitial, but the ones that are benefitial are passed on and eventually become widespread among a population. That is evolution.

There's nowhere I can't reach.

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Thus, evolution does not favor success. Nor does evolution equal "progress". Yet everybody, including yourself generally assumes this. Why?

That's why evolution is a product of natural selection and mutation. An organism is born with a benefitial mutation, with regards to its environment, that organism is more likely to survive and breed. A number of its offspring will have this mutation as well, meanwhile, the ones without the benefitial mutation or ones with harmful mutations might breed, but probably won't encounter much net reproductive success because they're not suited for the environment.

Generally, when harmful mutations express themselves on the phenotype it is selected against, whether it's environmental or, in the case of humans, social pressures.

Harmful mutations may be passed, yes, but they generally don't express themselves in the majority of the population.

You're confusing evolution with simple genetic mutation. Yes, mutations occur, but typically they're selected against. Evolution occurs when a trait becomes dominant in a population. Harmful mutations, because they're harmful generally don't have enough reproductive viability to reach that point.

This thing is sticky, and I don't like it. I don't appreciate it.