(33), In Scopus. "ScienceDirect - Molecular Brain Research : From Wild Wolf to Domestic Dog: Gene Expression Changes in the Brain." ScienceDirect - Home. Web. 09 Feb. 2011. http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T07-4CPDNY7-2&_user=3569841&_coverDate=07/26/2004&_rdoc=1&_fmt=high&_orig=search&_origin=search&_sort=d&_docanchor=&view=c&_searchStrId=1635189330&_rerunOrigin=scholar.google&_acct=C000060884&_version=1&_urlVersion=0&_userid=3569841&md5=fda5506194dcff5d9a67ea834c234759&searchtype=a.
This article describes an experiment used to compare the evolutionary changes between wolves and dogs. This experiment was performed by studying the dogs’ ribonucleic acids, also known as RNA and comparing the gene expressions. After studying the gene expressions, scientists have concluded that domestic dogs are still under the process of natural selection. However, the pressures causing them to evolve are completely different from that of a wolf. What they are not sure of is whether the changes in gene expression originate from genetics, or environmental factors and life history. This, in a way, explains the relatively fast means of extreme evolutionary changes, including behavioral changes. This in turn helped lead to the creation of an entirely new species: the domesticated dog.
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