Question

Which of the following statements is correct:

Select one:

a. Both of the other statements are correct

b. All complex sequences that show significant similarity in a pairwise sequence comparison are homologous.

c. All homologous sequences show significant similarity in a pairwise sequence comparison.

Answer 1

a. Both of the other statements are correct

Pairwise Sequence Alignment is used to identify regions of similarity that may indicate functional, structural and/or evolutionary relationships between two biological sequences (protein or nucleic acid).

Sequence homology is the biological homology between DNA, RNA, or protein sequences, defined in terms of shared ancestry in the evolutionary history of life.

Significant similarity is strong evidence that two sequences are related by evolutionary changes from a common ancestral sequence

so, All complex sequences that show significant similarity in a pairwise sequence comparison are homologous and All homologous sequences show significant similarity in a pairwise sequence comparison.

Thank You!