Question

An mRNA strand has a series of codons out of which three are mentioned below:

1. AUG
2. UUU
3. UAG

1. What will these codons be translated into?
2. What are the DNA codons that would have transcribed these RNA codons?

Answer 1

1. Translation Products:
   1. AUG: This is the start codon and translates into the amino acid Methionine.
   2. UUU: This codon translates into the amino acid Phenylalanine.
   3. UAG: This is a Stop codon (specifically, amber); it does not translate into an amino acid but signals the termination of protein synthesis.
2. DNA Template Codons:
   The DNA codons (on the template strand) that would have transcribed these mRNA sequences are:
   1. AUG ← TAC
   2. UUU ← AAA
   3. UAG ← ATC