Question

Here is a hypothetical sequence of a template strand of a gene in the DNA of a hypothetical organism: 3' C G T A C G G T A A G A T T G 5' Suppose that the underlined "A" was mutated to a "G". What effect would this have on the amino acid sequence encoded by this gene? Figure 17.5 Second mRNA base U C A G U UUU Phe UCU Ser UAU Tyr UGU Cys U UUC UCC UAC UGC C UUA Leu UCA UAA Stop UGA Stop A UUG UCG UAG Stop UGG Trp G C CUU Leu CCU Pro CAU His CGU Arg U CUC CCC CAC CGC C CUA CCA CAA Gln CGA A CUG CCG CAG CGG G A AUU Ile ACU Thr AAU Asn AGU Ser U AUC ACC AAC AGC C AUA ACA AAA Lys AGA Arg A AUG Met or start ACG AAG AGG G G GUU Val GCU Ala GAU Asp GGU Gly U GUC GCC GAC GGC C GUA GCA GAA Glu GGA A GUG GCG GAG GGG G It would eliminate the start codon It would eliminate the stop codon

          Here is a hypothetical sequence of a template strand of a gene in the DNA of a hypothetical organism:
3' C G T A C G G T A A G A T T G 5'
Suppose that the underlined "A" was mutated to a "G". What effect would this have on the amino acid sequence encoded by this gene?

Figure 17.5
Second mRNA base
U C A G
U UUU Phe UCU Ser UAU Tyr UGU Cys U
UUC UCC UAC UGC C
UUA Leu UCA UAA Stop UGA Stop A
UUG UCG UAG Stop UGG Trp G
C CUU Leu CCU Pro CAU His CGU Arg U
CUC CCC CAC CGC C
CUA CCA CAA Gln CGA A
CUG CCG CAG CGG G
A AUU Ile ACU Thr AAU Asn AGU Ser U
AUC ACC AAC AGC C
AUA ACA AAA Lys AGA Arg A
AUG Met or start ACG AAG AGG G
G GUU Val GCU Ala GAU Asp GGU Gly U
GUC GCC GAC GGC C
GUA GCA GAA Glu GGA A
GUG GCG GAG GGG G

It would eliminate the start codon
It would eliminate the stop codon

Here is a hypothetical sequence of a template strand of a gene in the DNA of a hypothetical organism:
3' C G T A C G G T A A G A T T G 5'
Suppose that the underlined "A" was mutated to a "G". What effect would this have on the amino acid sequence encoded by this gene?

Figure 17.5
Second mRNA base
U C A G
U UUU Phe UCU Ser UAU Tyr UGU Cys U
UUC UCC UAC UGC C
UUA Leu UCA UAA Stop UGA Stop A
UUG UCG UAG Stop UGG Trp G
C CUU Leu CCU Pro CAU His CGU Arg U
CUC CCC CAC CGC C
CUA CCA CAA Gln CGA A
CUG CCG CAG CGG G
A AUU Ile ACU Thr AAU Asn AGU Ser U
AUC ACC AAC AGC C
AUA ACA AAA Lys AGA Arg A
AUG Met or start ACG AAG AGG G
G GUU Val GCU Ala GAU Asp GGU Gly U
GUC GCC GAC GGC C
GUA GCA GAA Glu GGA A
GUG GCG GAG GGG G

It would eliminate the start codon
It would eliminate the stop codon

Added by Brittany J.

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