DNA defines cell behavior.

Formulation is probably to strong. Cell behavior gets influenced through hormones and other external influences.

Retroviruses also have no DNA and there might very well by other organisms that only have RNA.

There is a universal arrow of time.

Might well be false. Gödel found a while ago cases where standard Einstainian fomula violated that principle and I think there are still cases near black holes where that doesn't hold in string theory.

The many world hypothesis also replaces arrow with tree.

Evolution on earth explains the origin of live on earth.

That's not a consensus belief. It very possible that life first existed on some other planet and a few microbes moved to earth after an asteroid impact and afterwards doublicated.

RSA encryption is safe.

It's only safe as long as they are no quantum computers or substantial advances in the underlying math.