Question

part 3: the following mutation is found in the somatic cell of an orangutan
original dna: atg - cgg - tta
mutated: atg - cgg - ttt
after translation, what would be the correct amino acids of the original and
mutated sequence?
○ original: asn, mutated: lys
○ original: lys, mutated: asn
○ original: leu, mutated: phe
○ original: thr, mutated: lys

Explanation:

Step1: Transcribe DNA to mRNA

DNA is transcribed to mRNA by replacing T with U. For original DNA (ATG - CGG - TTA), mRNA is AUG - CGG - UUA. For mutated DNA (ATG - CGG - TTT), mRNA is AUG - CGG - UUU.

Step2: Use codon table to find amino acids

• Original mRNA codon UUA: UUA codes for Leucine (Leu).
• Mutated mRNA codon UUU: UUU codes for Phenylalanine (Phe).

Answer:

Original: Leu, Mutated: Phe (corresponding to the option "Original: Leu, Mutated: Phe")