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The number of standard and of effective multiple alignments

โœ Scribed by A. Dress; B. Morgenstern; J. Stoye

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
306 KB
Volume
11
Category
Article
ISSN
0893-9659

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โœฆ Synopsis

We study the number of all possible alignments of N sequences, N > 2, for two distinct alignment concepts proposed in the literature--standard alignments and effective alignments (consistent equivalence relations). Recursion formulae are developed to calculate these numbers. For standard alignments and for effective alignment of just two sequences, an explicit formula is also presented. The number of all effective alignments of a given site space is shown to be related to Stirling numbers of second kind. (~) 1998 Elsevier Science Ltd. All rights reserved.

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