Answer;
61
Explanation;
-The value 61 signifies that 61% of the 617 nucleotide positions are the same in both species, this about the comparable rRNA gene sequences in Comamonas testosteroni and Escherichia coli.
-Some cells have a dash rather than a value because those cells would compare one species to itself. Other shaded grey with no value because these cells would duplicate comparisons shown elsewhere in the matrix.
