During planetary exploration a new life form is discovered which has a DNA genome containing 6 different bases rather than the familiar four. The life form contains proteins with 25 different amino acids. Codons on Earth comprise three nucleotides; assuming a non-overlapping genetic code that includes initiation and termination codons, how many nucleotides would you predict to constitute a codon in the new life form, assuming all codons to be the same length? Briefly explain your answer.

If the following nucleotide sequence, CTC/TGT/AAG/ACC/TTT experienced a mutation resulting in the deletion of the second cytosine in the first DNA triplet so the sequence is now CT_/TGT/AAG/ACC/TTT, what would be the amino acid sequence created from this mutated DNA strand? Table of mRNA codons UUA, UUG = leucine AGG, AGA = arginine %3D CAU, CAC = histidine GUU, GÜC, GUA = valine GAA. GAG=glutamic acid GCU, GUA, GUG = alanine GAU, GAC = asparagine GGU, GGC, GGA = glycine UCA, UCU =serine CGU, CGC, CGA = arginine

How many codons are needed to specify one amino acid?

How can the 4 nucleotides present in DNA code for the 20 different amino acids found in proteins? How many bases would be needed in a codon if there were five RNA bases instead of four?