The percent similarity can be calculated by counting the number of identical nucleotides and dividing by the total number of nucleotides in the sequence portion shown.
For the given sequences:
GCAGGTCGGTAAGTT
GCAGTTCGACAAGTT
There are 11 out of 16 nucleotides that are identical.
Percent similarity = (11/16) x 100% ≈ 68.75%
Therefore, the correct answer is about 60 percent.
Sequences for the same gene in two different species are compared as shown:
Species 1 ... GCAGGTCGGTAAGTT
Species 2... GCAGTTCGACAAGTT
For the sequence portion shown, what is the percent similarity?
(1 point)
about 20 percent
about 40 percent
about 60 percent
about 80 percent
1 answer