Question

mrna: aug uuu ccg gac uga
what is the correct amino acid sequence?
met - pro - phe - gly
met - leu - pro - asp
met - phe - gly - asp
met - phe - pro - asp

Explanation:

Step1: Identify codons

The mRNA sequence is AUG UUU CCG GAC UGA. Codons are 3 - letter sequences. So the codons (excluding the stop codon UGA) are AUG, UUU, CCG, GAC.

Step2: Translate codons to amino acids

• AUG codes for Methionine (Met).
• UUU codes for Phenylalanine (Phe).
• CCG codes for Proline (Pro).
• GAC codes for Aspartic acid (Asp).
• UGA is a stop codon, so we don't translate it.

So the amino acid sequence is Met - Phe - Pro - Asp.

Answer:

Met - Phe - Pro - Asp (the option with this sequence, e.g., if it's the fourth option: D. Met - Phe - Pro - Asp, but based on the options given, it's the last option: Met - Phe - Pro - Asp)