Any reading on the topic you could point me to? Whenever I head about vestigial DNA, I’m reminded of the preserved wetlands which forced the roads to arc the long way around it. And in so doing, structurally affected traffic despite no cars ever going inside its bounds.

I guess what I’m wondering how we can be sure that structure is function but non-coding structure has no function and exerts no selective pressure - isn’t the Golgi apparatus analogously “non-coding”?