Question

Identify the correct sequence steps used by BLAST: A. A list of word of length 3 is made in the query sequence. B. Threshold step is repeated for each three-letter word in the query sequence. C. Sequence is optionally filtered to remove low complexity region. D. Threshold is selected to reduce the number of possible matches. E. Each database is scanned for exact match to one of the 50 words.

• A. A, C, B, D, E
• B. A, C, D, E, B
• C. C, A, D, B, E
• D. A, D, B, C, E

Hint:

In BLAST, first filter the query, then generate words, apply threshold, repeat scoring for words, and scan the database for matches.

Answer 1

The Correct Option is C