✔ 最佳答案
serine: AGT / AGC
methionine: ATG
glutamine: CAA/CAG
serine-methionine-glutamine -->
AGTATGCAA
AGTATGCAG
AGCATGCAA
AGCATGCAG
all should be possible.
http://en.wikipedia.org/wiki/DNA_codon_table
2nd base T C A G 1st base T TTT(Phe/F) PhenylalanineTCT(Ser/S) SerineTAT(Tyr/Y) TyrosineTGT(Cys/C) CysteineTTC(Phe/F) PhenylalanineTCC(Ser/S) SerineTAC(Tyr/Y) TyrosineTGC(Cys/C) CysteineTTA(Leu/L) LeucineTCA(Ser/S) SerineTAAOchre (Stop)TGAOpal (Stop)TTG(Leu/L) LeucineTCG(Ser/S) SerineTAGAmber (Stop)TGG(Trp/W) Tryptophan C CTT(Leu/L) LeucineCCT(Pro/P) ProlineCAT(His/H) HistidineCGT(Arg/R) ArginineCTC(Leu/L) LeucineCCC(Pro/P) ProlineCAC(His/H) HistidineCGC(Arg/R) ArginineCTA(Leu/L) LeucineCCA(Pro/P) ProlineCAA(Gln/Q) GlutamineCGA(Arg/R) ArginineCTG(Leu/L) LeucineCCG(Pro/P) ProlineCAG(Gln/Q) GlutamineCGG(Arg/R) Arginine A ATT(Ile/I) IsoleucineACT(Thr/T) ThreonineAAT(Asn/N) AsparagineAGT(Ser/S) SerineATC(Ile/I) IsoleucineACC(Thr/T) ThreonineAAC(Asn/N) AsparagineAGC(Ser/S) SerineATA(Ile/I) IsoleucineACA(Thr/T) ThreonineAAA(Lys/K) LysineAGA(Arg/R) ArginineATG[A](Met/M) MethionineACG(Thr/T) ThreonineAAG(Lys/K) LysineAGG(Arg/R) Arginine G GTT(Val/V) ValineGCT(Ala/A) AlanineGAT(Asp/D) Aspartic acidGGT(Gly/G) GlycineGTC(Val/V) ValineGCC(Ala/A) AlanineGAC(Asp/D) Aspartic acidGGC(Gly/G) GlycineGTA(Val/V) ValineGCA(Ala/A) AlanineGAA(Glu/E) Glutamic acidGGA(Gly/G) GlycineGTG(Val/V) ValineGCG(Ala/A) AlanineGAG(Glu/E) Glutamic acidGGG(Gly/G) Glycine