Ps: AACT = TCAA so you divide by 2 for that case but AAAA and ACTCA are palindromes which you don't divide by 2 DNA sequences have an alphabet {A,C,G,T}.How many DNA sequences of length n are there? (Two DNA sequences are the same if one isthe reverse of the other).

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Answered: DNA sequences have an alphabet…

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter6: The Trigonometric Functions

Section6.1: Angles

Problem 21E

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DNA sequences have an alphabet {A,C,G,T}. How many DNA sequences of length n are there? (Two DNA sequences are the same if one is the reverse of the other).