Abstract
The behavior of nature is conservative, so when it comes to development, there is not any new type of biology for every life form; there are only gradual and continuous changes adapted. Therefore, studying these changes and modifications becomes extremely important. Alignment is the most fundamental aspect of visualizing and manipulating biological sequences. Sequence alignment is a method of arranging nucleotide and protein sequences in order to compare two or more sequences. DNA and proteins are consequences of evolution, so identification of differences and similarities between sequences (DNA, RNA, and proteins) becomes important to study homology. A comparison of sequences is necessary for analyzing the function and structure of newly developed sequences. Sequence alignment is an elementary process through which one can identify evolutionary relationships among sequences and can feature the role of an unknown sequence. Therefore, it assists in drawing inferences from evolutionary changes.
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