TLS Online TPP Program

#Question id: 27217


Which of the following statements is true for the BLAST algorithm for sequence comparison?

#SCPH01 Biochemistry
  1. It is a heuristic algorithm.
  2. BLAST alignments are guaranteed to be the best possible alignment subject to the correctness of the scoring function. 
  3. The size of the sequence alphabet has no effect on the efficiency of the BLAST algorithm.
  4. In BLAST, word length is 2 for protein sequence.