5
Question
What can be number of possible nucleotide sequences for a peptide that has the sequence of amino acid as Phe-Tyr-Met-Pro-His?
What can be number of possible nucleotide sequences for a peptide that has the sequence of amino acid as Phe-Tyr-Met-Pro-His?
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Solution
The correct option is C 32
Phe or phenylalanine can be coded by two codons i.e., UUU or UUC.
Tyr or tyrosine can be coded by two codons i.e., UAU or UAC.
Met or methionine can only be coded by one codon i.e., AUG.
Pro or proline can be coded by four codons i.e., CCU, CCC, CCA, and CCG.
His or histidine can be coded by two codons i.e., CAU and CAC.
So, the number of possible nucleotide sequences will be a product of the number of codons that can code for each of the mentioned amino acids i.e., 2x2x1x4x2=32.
Phe or phenylalanine can be coded by two codons i.e., UUU or UUC.
Tyr or tyrosine can be coded by two codons i.e., UAU or UAC.
Met or methionine can only be coded by one codon i.e., AUG.
Pro or proline can be coded by four codons i.e., CCU, CCC, CCA, and CCG.
His or histidine can be coded by two codons i.e., CAU and CAC.
So, the number of possible nucleotide sequences will be a product of the number of codons that can code for each of the mentioned amino acids i.e., 2x2x1x4x2=32.
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