Virtual Labs

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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

Similarity search using BLAST

Choose difficulty:

Beginner

Intermediate

Advanced

1.Expand BLAST

a: Bioinformatics related Local Alignment Search Tool Explanation

Explanation

b: Beginners Level Alignment for Sequence Test Explanation

Explanation

c: Basic Local Alignment Search Tool Explanation

Explanation

d: Beginners Level Software Tool Explanation

Explanation

2.Type of matrix used in Blast score analysis.

a: Diagonal matrix Explanation

Explanation

b: Substitution matrix Explanation

Explanation

c: Column matrix Explanation

Explanation

d: Identity matrix Explanation

Explanation

3.In sequence alignment, BLAST uses which of the following specific matrices.

a: BLOSUM Explanation

Explanation

b: PAM Explanation

Explanation

c: Either BLOSUM or PAM Explanation

Explanation

d: None Explanation

Explanation

4.Smaller E-value is indicative of

a: Best match between the sequence Explanation

Explanation

b: Dissimilar sequences Explanation

Explanation

c: Error in gap score of sequence alignment Explanation

Explanation

d: Dissimilarity of nucleotide position in the given sequence Explanation

Explanation

5.Given, DNA sequence of Rattus rattus and Pan troglodytes and to compare against a known nucleotide database search. Which of the following blast program (s) is used for sequence similarity search?

a: blastp Explanation

Explanation

b: blastn Explanation

Explanation

c: blastx Explanation

Explanation

d: tblastn Explanation

Explanation

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