Below is a base sequence found in a template strand of DNA.Using the mRNA that would be derived from transcription, what isthe amino acid sequence within the polypeptide that is encoded bythe mRNA?
5â-⦠ACATCAATAACT â¦-3â
thr-ser-ile-thr
ser-ile-thr-thr
cys-ser-tyr-tyr
cys-ser-tyr
ser-tyr-cys
ser-tyr
none â the first codon is a stop codon
Below is a base sequence found in a template strand of DNA.Using the mRNA that would be derived from transcription, what isthe amino acid sequence within the polypeptide that is encoded bythe mRNA?
5â-⦠ACATCAATAACT â¦-3â
thr-ser-ile-thr
ser-ile-thr-thr
cys-ser-tyr-tyr
cys-ser-tyr
ser-tyr-cys
ser-tyr
none â the first codon is a stop codon
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5). The table shows five different mutations of a small section of a gene.
Use the base-pairing rules to complete the second column. For each mutation, write the sequence for any mRNA codons that will be changed as a result of the mutation in bold. Write any codons that wonât be changed in regular font.
Using the genetic code chart from question #3, identify any stop codons in the mRNA molecules â write these codons in red
For each mutation, write any amino acids that will be changed in the last column in bold font. Use red XXXs to indicate any amino acids that will be missing as a result of stop codons and use use regular font indicate any amino acids that will not be changed.
DNA (Template Strand) | mRNA codon | Polypeptide |
Original DNA = GCAAGTACCTGA | CGU UCA UGG ACU | arg â ser â trp â thr |
Mutation = GCCAGTACCTGA (nucleotide change underlined) | ____ ____ ____ ____ | ___ ___ ___ ___ |
Mutation = GCACGTACCTGA (nucleotide change underlined) | ____ ____ ____ ____ | ___ ___ ___ ___ |
Mutation = GCAAGTACTTGA (nucleotide change underlined) | ____ ____ ____ ____ | ___ ___ ___ ___ |
Mutation = GAAGTACCTGA (first C deleted) | ____ ____ ____ ____ | ___ ___ ___ ___ |
Mutation = GCAAGTACTGA (second C deleted) | ____ ____ ____ ____ | ___ ___ ___ ___ |