[Sholmesy]

Sure, but it's unlikely that you would have an IQ that low, and not have a specific medical disorder that is causing some of your impairment. E.g, Down Syndrome is a chromosomal change, something that can be measured outside of a 'bad genetics'.

[nullifidian]

What? You somehow think that if there is a named thing then it's not genetics. It's genetics both if it's a named thing, and if it's yet unnamed thing too.

[Sholmesy]

My point is that the distinction is important.

Of course, named disorder or not, genetics can be the cause/have a high impact.