View Single Post
Jul23-09, 05:04 PM
P: 293
Quote Quote by junglebeast View Post
Understanding the function of DNA makes it obvious that DNA itself is not necessary for life. It's role is simply to store information in a way that can be copied to allow evolution to occur.
That is most certainly not the only function of DNA. DNA is essential to cellular function.

Anyway, life on other planets almost certainly will not use the exact form of DNA as here on Earth.
How can you be so certain? The "central dogma" could very well be universal.....across the universe. Until we actually find extraterrestrial life, the words "almost certainly" has no substance to it whatsoever.