Question

29. Which of the following changes would be expected if a CAUUUG sequence of bases mutated to CACUUG? a. The amino acid sequence would be shorter than expected b. The identity of one amino acid would change C. The identity of more than one amino acid would change d. The amino acid sequence would remain unchanged Concor Chart Phenye enne Tyrosine Cysteme Penye Senne Tyrosine Cysteine Cene SHOD Stop DO teha Proline stone Arginine Leucine Proline Arne Leucine Proline Glutamine Arginine Levine Proline Glutamine Arpine 50 ucine Threonine Asparagne Threonine Aspargne Serine Threonine Arne We Agenne Aspachody Alanine Aspade A Glumc Asd Syone Alan Glutamic Asal Gyan

Answer 1

Given Question is asking what will be expected if a CAUUUG sequences of bases mutated to CACUUG

A codon is a sequence of three DNA or RNA nucleotides that corresponds with a specific amino acid or stop signal during protein synthesis

From the given table we can determine that

CAU code for histidine

UUG code for leucine

CAC code for histidine

As Mutation is in third Nucleotide of codon so its silent Mutation as both CAU & CAC code for histidine and there is no change amino acid synthesis

Hence given both sequences of bases ,code for same histidine and leucine amino acid

Hence option d is correct amino acid sequences will remain unchanged and other option can be eliminated

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