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Sequence AlignmentMethods, Models, Concepts, and Strategies$
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Michael Rosenberg

Print publication date: 2009

Print ISBN-13: 9780520256972

Published to California Scholarship Online: March 2012

DOI: 10.1525/california/9780520256972.001.0001

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Sequence Alignment

Sequence Alignment

Concepts and History

Chapter:
(p.1) Chapter 1 Sequence Alignment
Source:
Sequence Alignment
Author(s):

Michael S. Rosenberg

Publisher:
University of California Press
DOI:10.1525/california/9780520256972.003.0001

Sequence alignment is a fundamental procedure that compares two or more biological sequences (whether DNA, RNA, or protein). This chapter introduces the concepts and history of sequence alignment by describing the dynamic programming approach, common basic algorithms, methods, and statistical approaches that have been fundamental to the development of sequence alignment software. It examines the biological concept of homology in detail. The biological goal of alignment is the inference of site homology. Homology is similarity in a character or trait due to inheritance from a common ancestor. The chapter also describes the fundamental difference between the biological and computational goals for which algorithms are generally designed.

Keywords:   sequence alignment, biological sequences, DNA, RNA, protein, homology, algorithms

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