The E-value is a measure of how significant the similarity is between two sequen

Question

The E-value is a measure of how significant the similarity is between two sequences. The lower the E value, the more significant the match (i.e., the more confident you should be that the sequence BLAST found is a biologically interesting match). (A reminder of the shorthand used in the BLAST results page: an E-value of 8e-21 is 8 times 10^-21 in scientific notation.) (a) According to the YouTube video, what is the maximum E value score that could still be considered significant? (Express the number is scientific notation. (b) A basic math question: which is the lower E-value: 7e-23 or 4e-18?

Explanation / Answer

a) In the YouTube video, the maximum E-value score 10-4 could still be considered signifcant.

b) 7e-23 is the lower E-value.

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