Sometimes knowing the DNA sequence of a gene that codes for a protein does not t
ID: 167645 • Letter: S
Question
Sometimes knowing the DNA sequence of a gene that codes for a protein does not tell one the amino acid sequence of the mature protein. What is/are reason) s) for this? (Select all that apply.) Splicing of mRNA may alter the RNA transcript prior to protein translation. Some mature proteins have a portion of their pro-protein sequence removed. Not all protein translation processes have complete fidelity to the gene sequence. Some DNA samples are difficult to sequence, thus leading to errors in the gene sequence.Explanation / Answer
The correct answer is :Splicing of mRNA may alter the RNA transcript prior to protein translation.
Reason: Not all the DNA sequences transcribed to mRNA are translated to aminoacids in proteins.Prior to translation the mRNA undergoes spilcing to remove non coding genes known as introns.