突变的两种方式 Thr)( Gin)(Arg)(GI Codon 1 Codon 2 Codon 3 Codon 4 acAC T GG T WIld-type gene Thr A CAC AGCGCGGT Synonymous substitution Base substitutions Thr Gin Ser)(Gly ACA G T GG T Missense substitution Thr)(Ala)(Ala Frameshift mutation AC A G C"AGcG"TG"GT… A Genetics Ch126Genetics Ch12.6 一、突变的两种方式