Question

While scanning for similarities in motifs, how regular expressions’ techniques work?

(a) It represents a sequence family by a string of characters and further compares them

(b) An algorithm similar to dynamic programming is used

(c) Dot matrix analysis is used in this type of sequence analysis

(d) Matrix analysis methods are used in this type

This question was addressed to me in semester exam.

Origin of the question is Motif and Domain Databases Using Regular Expressions topic in division Sequence Alignment of Bioinformatics

Answer 1

Correct answer is (a) It represents a sequence family by a string of characters and further compares them

To elaborate: In regular expressions’ techniques Pattern matching is defined as true or false in answer or outcome. In other words, if the pattern described in regex is found in a string of letters, the answer is true.