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DNA is not the only genetic molecule


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#1
Cloned

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https://bigthink.com...ve-nucleic-acid

 

The central dogma of biology states that genetic information flows from DNA to RNA to proteins, but new research suggests that this may not be the only way for life to work.
A sophisticated computer analysis revealed that millions of other molecules could be used to function in place of the two nucleic acids, DNA and RNA.
The results have important implications for developing new drugs, the origins of life on Earth, and its possible presence in the rest of the universe.

 

Bad news, guys. 



#2
funkervogt

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The more important question is: which biomolecules are the best at storing genetic information? 

 

Earthly DNA and RNA are probably the best or almost-best once all tradeoffs are considered. 



#3
Cloned

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DNA and RNA could be the best choices. But if other proteins also store and transmit information, the whole system is much more complex than previously thought.
Or much more primitive when the environmental conditions are harsher - which greatly increases the likelihood of life occurring on other planets.






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