Before revision: Aligning biological sequences belongs to the most important problems in computational sequence analysis; it allows for detecting evolutionary relationships between sequences and for predicting biomolecular structure and function.
After revision: Aligning biological sequences belongs to the most important computational problems is that of sequence alignment, i.e. arranging sequences from URLanisms in such a way to identify similar regions, to detect evolutionary relationships between sequences and for predicting biomolecular structure and function.