Genome Evolution And Evolution Within Genomes Essays

1960 Words Sep 16th, 2016 8 Pages
Genome Evolution

Did you know that the Tasmanian Devil’s genome is rapidly evolving to resist a deadly disease that has killed eighty percent of their population since 1996? To most people that means little to nothing, because most people don’t know what a genome is let alone the process in which it takes to evolve or for Scientists to discover the evolution. In the following paragraphs we will discuss what genome evolution is, how genomes are able to be compared and how the size can contribute in to that, the gene functions and expressions, applying comparative genomes and the evolution within genomes. So what is a genome? A genome is the complete DNA sequence of an organism. The Genome is a compilation of the stored DNA in genes on the chromosomes. For Eukaryotic cells those DNA strands can be found in the Nucleus. Genomes contain the genetic instruction manual for building and maintaining an organism, and the history of that species life. Evolution is what happens to those genomes when it changes in structure through mutation, horizontal gene transfer, or sexual reproduction. Approximately 4 million years ago, Chimpanzees and human gene pools split. The Chimpanzee genome completed sequencing in 2005 and allowed us to provide comparisons between humans and our closest living relatives. In comparison the human and chimpanzee genomes differ less than one and a half percent in reference to nucleotide substitutions. Comparing these insertion and deletions or 'indels ' to…

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