5. In Salmonella, the biochemical pathway for the synthesis of histidine involves 10 enzymes, which are encoded by 10 genes. Examine the following nucleotide sequences from two his-mutants and two possible back mutations that can occur. Gene with Mutation hisG Nucleotide sequence in his-Strain GGG Circle the type of back mutation that has occurred in hisG (1 mark): Transcribe each nucleotide sequence (2 marks) substitution Back Mutation GAG deletion insertion

Biology: The Dynamic Science (MindTap Course List)
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ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
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Chapter19: Genomes And Proteomes
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5. In Salmonella, the biochemical pathway for the synthesis of histidine involves 10 enzymes, which are encoded
by 10 genes. Examine the following nucleotide sequences from two his-mutants and two possible back
mutations that can occur.
Gene with Mutation
hisG
Nucleotide sequence in his-Strain
GGG
Circle the type of back mutation that has occurred in hisG (1 mark): substitution
Transcribe each nucleotide
sequence (2 marks)
Back Mutation
GAG
deletion
insertion
Transcribed Image Text:5. In Salmonella, the biochemical pathway for the synthesis of histidine involves 10 enzymes, which are encoded by 10 genes. Examine the following nucleotide sequences from two his-mutants and two possible back mutations that can occur. Gene with Mutation hisG Nucleotide sequence in his-Strain GGG Circle the type of back mutation that has occurred in hisG (1 mark): substitution Transcribe each nucleotide sequence (2 marks) Back Mutation GAG deletion insertion
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