Question

You are performing genome sequnces comparisons among species part of a common lineage and, in one species you identify a “new” gene. It has no significant homology to any other sequnce in its genome or in the genomes of the other species in that lineage. This new gene was most likely generated by:

Question options:

	a). Neofunctionalization
	b). Horizontal/lateral gene transfer
	c). Subfunctionaliztion
	d) Nonfunctionalization
	e) Reversion of nonsense codons to amino acid-encoding codons in a pseudogene.

Answer 1

B is correct answer according to me because horizontal gene transfer means transfer of gene between unrelated species.  

Vertical gene transfer is transfer of gene from parents to offspring.  

Horizontal gene transfer mainly occur in prokaryotic cell and unicellular eukaryotic cells.

Methods of horizontal gene transfer are conjugation, transformation, transduction.