why does an mRNA molecule need special editing in eukaryotes

Answer 1

mRNA molecule undergoes special editing in eukaryotes to remove introns, non-coding regions that interrupt the coding sequence (exons) of the gene. This process known as splicing is essential for the formation of a functional protein. Without splicing, the mRNA would contain non-coding regions that would interfere with the translation process or lead to the synthesis of a non-functional protein. Additionally, eukaryotic mRNA molecules also undergo capping and polyadenylation, which protect the mRNA from degradation, and aid in its transport from the nucleus to the cytoplasm, respectively. These modifications are crucial in regulating gene expression, controlling the timing and amount of protein produced, and playing a role in diverse cellular functions.