Question

Why doesnt your dna look like the double helix model that Watson & Crick discovered?

Answer 1

Everyone’s DNA are different because they are different people. One part of DNA are your genes. The genes are what you look like, hair color, eye color, everything that you can get from your parents. Even if you have a twin, it’s not necessary that you two would have the same genes. For example, one could have green eyes and the other could have brown eyes.
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Answer 2

Well it looks similar, but it can't look exactly the same as yours or mine because we all have extremely unique DNA. And if you can't look close enough, it'll probably just look like snot or some other viscous material rather than a spiraling ladder. You'd have to be able to look very closely to see a similar model to Watson and Crick's.