Why does DNA look the way it does, if we can't actually see it in Humans?

Question

For example. DNA looks like a twisted ladder, with a bunch of pills stuck together.

if we can't actually SEE DNA then why

Does it looke like that?

Answer 1

Do you mean 'how do we know it looks like that'?

Answer 2

um... what?

Whether or not a cellular component that has been around for 800 million years can be seen by humans (who have been around for a few million at the most, 40,000 at the least) is so completely irrelevant to the whole matter that I hardly know what to say.

If mitochondria can't be seen by humams, why do they look like that?  What about golgi complexes?  How about neurons?  Why does a neuron look like that if I can't see it?

wow

Answer 3

The structure of DNA at the atomic level has been determined in several different ways, including x-ray crystallography and nuclear magnetic resonance. So, when you see an atomic representation of DNA as a twisted ladder, that's because it really does look that way.

Or rather, it would if you could magically enlarge DNA enough to be visible.

Answer 4

the shape of DNA actually has already been discovered many years before, after years of experiments also observations though electron microscope. So the shape is not a human prediction or manipulation, but it's based on accurate scientific experiments.