Homologous sequences:

A. are expected to have very similar sequences in related organisms

B. are expected to have similar sequences in related proteins but from unrelated or distantly related organisms

C. may have become similar to each by random mutation

D. all of these

E. none of these

Homologous sequences: A. are expected to have very similar sequences in related organisms

Explanation:

Homologous sequences -

Homology refers to sharing the same ancestors between the pairs of structure, or genes.

For example -

homologous structures is the forelimbs of the vertebrates, the flippers of the whales and the forelegs of horses and dogs are all derived from the same ancestral tetrapod structure.

Sequence homology or homologous sequences is the homology between nucleic acid or protein sequences in terms of shared ancestry in the evolutionay history of the life. These sequences may be either orthologs or paralogs.