What are the steps (in the correct order) that link a change in the base sequence of a gene to a change in the phenotype of an organism like a mouse or a human?
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An addition mutation and a deletion mutation.If the mutations occur within the same codon, only that codon (amino acid) will be altered.
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One addition and one deletion mutation.This combination results in no net change in the number of bases, so the reading frame would eventually be restored.
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DNA--> RNA --> Protein This is the central dogma, which summarizes the flow of information in cells from DNA (genes) to proteins. For genes that encode RNAs that do not function as mRNAs, only the DNA—>RNA step occurs.
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Start codon: AUG; stop codon: UAA; protein: Met-Ala-Leu-stop. The start codon is AUG, and there are three possible stop codons: UAA, UAG, and UGA.
Q.2.
In Figure 16.7b, what would be the base sequence of the mRNA and the amino acid sequence of the protein if the bottom DNA strand serves as the template for transcription? (Look at figures)
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An addition mutation and a deletion mutation.If the mutations occur within the same codon, only that codon (amino acid) will be altered.