ABSTRACT
In the 1980s, molecular biology became dependent on the databases for a current view of known sequences. There was some difficulty achieving timely entry of the sequences, but, today, almost all sequences are entered within a month of publication. The reason rapid entry is important is so that biologists can determine the relationship of their sequences with other sequences that have been determined. Another reason for organizing biological sequences into databases is to learn new biology. Evolution conserves useful sequence patterns over great amounts of evolutionary time. When a new sequence has a great deal of similarity with a sequence already in a database, there is a good chance that the biological functions might also be similar. A suffix tree is very useful for locating repeats within or between sequences. This is very valuable to a biologist to find exact repeats between his sequence and another in the database.
