Question

translation practice
directions: read each sequence of rna and translate it into amino acids using your codon chart. use the first three
letters of each amino acid when listing the amino acid. use the 3 - letter abbreviation for the amino acid.
nirna 5 aug uac ccc aag gcg gca uaa 3
amino acid
mrna 5 aug gag gca cac uuu ggg uga 3
amino acid
mrna 5 aug cug aca gcu cuu ucg uag 3
amino acid
mrna 5 aug aac uua ccg aaa ucc uaa 3
amino acid

Explanation:

Step1: Translate mRNA codons

Use the codon chart. For example, AUG codes for Met (Methionine).

Step2: Continue translation

For the first mRNA sequence:

• AUG: Met
• UAC: Tyr
• CCC: Pro
• AAG: Lys
• GCG: Ala
• GCA: Ala
• UAA: Stop (no amino - acid)

For the second mRNA sequence:

• AUG: Met
• GAG: Glu
• GCA: Ala
• CAC: His
• UUU: Phe
• GGG: Gly
• UGA: Stop

For the third mRNA sequence:

• AUG: Met
• CUG: Leu
• ACA: Thr
• GCU: Ala
• CUU: Leu
• UCG: Ser
• UAG: Stop

For the fourth mRNA sequence:

• AUG: Met
• AAC: Asn
• UUA: Leu
• CCG: Pro
• AAA: Lys
• UCC: Ser
• UAA: Stop

Answer:

First mRNA amino - acid sequence: Met, Tyr, Pro, Lys, Ala, Ala
Second mRNA amino - acid sequence: Met, Glu, Ala, His, Phe, Gly
Third mRNA amino - acid sequence: Met, Leu, Thr, Ala, Leu, Ser
Fourth mRNA amino - acid sequence: Met, Asn, Leu, Pro, Lys, Ser