(a) Find the sum-of-pairs score for a given alignment. Use the following scoring function for this program: 4 points for a match, -1 points for a mismatch, -2 for a s(-,base) or s(base,-) and 0 for a s(-,-).
A-G
AC-
TCG
(b) What is the Jukes-Cantor distance model and why is it more appropriate than a simple model that merely counts the number of mismatches?
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