9
votes
2answers
291 views

How does the genetic code evolve?

After looking at this question, some other questions poped in my mind. The DNA code is redundant, there are 20 amino acids for 64 possible nucleotide combinations. Therefore some amino acid are coded ...
0
votes
1answer
46 views

How do amino acids become attached to tRNA?

Is there a protein that catalyzes this or does it happen spontaneously? In which part of the cell does this happen?
12
votes
1answer
238 views

Can DNA act as a translation substrate?

I get conflicting answers. One would think if it was true, it would be rather seminal and widely known. There are papers from Khorana[1], Holland[2], and Bretscher[3] (late 60s) that suggest that it ...