Question

Which of the following would provide the first codon?mRNA: UUCAAUGCCUCAAGGUUAAAGCGGCGGUUCCCUGGCAUG

Answer 1

Cells decode mRNAs by reading their nucleotides in groups of three, called codons.

-One "start" codon, AUG, marks the beginning of a protein and also encodes the amino acid methionine

UUCAAUGCCUCAAGGUUAAAGCGGCGG

So the first codon would be AUG