Genes that have homologs in a variety of species have been discovered through th

Question

Genes that have homologs in a variety of species have been discovered through the analysis of genome sequences. In fact, it is not uncommon to find a family of homologous genes encoding proteins that are unmistakably similar in amino acid sequence in organisms as diverse as budding yeast, archaic, plants, and humans. Even more remarkably, many of these proteins can substitute functionally for their homologs in other organisms. Explain what it is about the origins of cells that makes it possible for proteins expressed by homologous genes to be functionally interchangeable in different organisms.

Explanation / Answer

Homology, sequence regions that are homologous are called conserved between species, two homology DNA segments shared anchestry leads evolutionary process by which new biological species arise. This should not beconfused with similar sequences ( because of chance such sequence are similar but not homology) on DNA segments in which a particular amino acid is substituted with different one with functionally equivalent, ie;.many of the proteins can substitute functionally for their homologs in other organisms and these genes functionally interchangeable in different organisms.

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