Question

what sequence of amino acids would be coded by the following set of nucleotides? agu aua ucg cgu ugu
a. arg, leu, ser, asn, stop
b. ser, met, leu, gln, cys
c. arg, thr, lys, thr, gly
d. ser, ile, ser, arg, cys

Explanation:

Step1: Identify codons

The given nucleotide sequence is AGU AUA UCG CGU UGU. Each set of three nucleotides is a codon.

Step2: Match codons to amino - acids

• AGU codes for Ser (serine) according to the codon - amino acid table.
• AUA codes for Ile (isoleucine).
• UCG codes for Ser (serine).
• CGU codes for Arg (arginine).
• UGU codes for Cys (cysteine).

Answer:

D. Ser, Ile, Ser, Arg, Cys