Question

base u c a g base
u uuu phenylalanine ucu serine uau tyrosine ugu cysteine u
uuc phenylalanine ucc serine uac tyrosine ugc cysteine c
uua leucine uca serine uaa stop uga stop a
uug leucine ucg serine uag stop ugg tryptophan g
c cuu leucine ccu proline cau histidine cgu arginine u
cuc leucine ccc proline cac histidine cgc arginine c
cua leucine cca proline caa glutamine cga arginine a
cug leucine ccg proline cag glutamine cgg arginine g
a auu isoleucine acu threonine aau asparagine agu serine u
auc isoleucine acc threonine aac asparagine agc serine c
aua isoleucine aca threonine aaa lysine aga arginine a
aug methionine acg threonine aag lysine agg arginine g
g guu valine gcu alanine gau aspartic acid ggu glycine u
guc valine gcc alanine gac aspartic acid ggc glycine c
gua valine gca alanine gaa glutamic acid gga glycine a
gug valine gcg alanine gag glutamic acid ggg glycine g
which mrna sequences code for the amino acid lysine?
aau and aaa
ggg and gga
aaa and aag
aag and uac

Explanation:

By looking at the provided genetic - code table, we find that the mRNA codons AAA and AAG code for the amino - acid lysine.

Answer:

AAA and AAG