Editing FOXP2 (section)

=== <span id="Chimpanzees compared with humans"></span>Chimpanzees ===
In chimpanzees, FOXP2 differs from the human version by two amino acids.<ref>{{Cite journal | vauthors = Smith K |date=2009-11-11|title=Evolution of a single gene linked to language|journal=Nature|doi=10.1038/news.2009.1079|issn=1744-7933}}</ref> A study in Germany sequenced FOXP2's complementary DNA in chimps and other species to compare it with human complementary DNA in order to find the specific changes in the sequence.<ref name="Enard_2002" /> FOXP2 was found to be functionally different in humans compared to chimps. Since FOXP2 was also found to have an effect on other genes, its effects on other genes is also being studied.<ref>{{Cite news|date=2009-11-11|title=Why can't chimps talk? It's more than just genes|work=Reuters|url=https://www.reuters.com/article/us-humans-speech-idUSTRE5AA3J920091111|access-date=2019-02-21}}</ref> Researchers deduced that there could also be further clinical applications in the direction of these studies in regards to illnesses that show effects on human language ability.<ref name="Konopka_2009" />