Question

which amino acids are coded for by the mrna strand: aug uca cga ggu?
o methionine, leucine, alanine, lysine
o methionine, serine, arginine, glycine
o tyrosine, serine, alanine, proline
o tyrosine, proline, serine, glycine

Explanation:

Step1: Analyze the first codon AUG

Using the mRNA codon chart, for the first base A, second base U, third base G, we find that AUG codes for methionine.

Step2: Analyze the second codon UCA

For the first base U, second base C, third base A, UCA codes for serine.

Step3: Analyze the third codon CGA

For the first base C, second base G, third base A, CGA codes for arginine.

Step4: Analyze the fourth codon GGU

For the first base G, second base G, third base U, GGU codes for glycine.

Answer:

methionine, serine, arginine, glycine