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Gene Involved In Human Language Development Also Involved In Bat Echolocation

Date:
September 19, 2007
Source:
Public Library of Science
Summary:
When it comes to the FOXP2 gene, humans have had most to shout about. Discoveries that mutations in this gene lead to speech defects and that the gene underwent changes around the time language evolved both implicate FOXP2 in the evolution of human language. A new study has found that the FOXP2 gene shows unparalleled variation in echolocating bats. This gene's sequence differences among bat lineages correspond well to contrasting forms of echolocation.

Harlequin bat.
Credit: Photo by G. Jones

When it comes to the FOXP2 gene, humans have had most to shout about. Discoveries that mutations in this gene lead to speech defects and that the gene underwent changes around the time language evolved both implicate FOXP2 in the evolution of human language.

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More recently, patterns of gene expression in birds, humans and rodents have suggested a wider role in the production of vocalisations. Yet numerous reports have established that FOXP2 shows very little genetic variation across even distantly related vertebrates - from reptiles to mammals -- providing few extra clues as to the gene's role.

A new study, undertaken by a joint of team of British and Chinese scientists, has found that this gene shows unparalleled variation in echolocating bats. The results, appearing in a study published in the online, open-access journal PLoS ONE on September 19, report that FOXP2 sequence differences among bat lineages correspond well to contrasting forms of echolocation.

Like speech, bat echolocation involves producing complex vocal signals via sophisticated coordination of the mouth and face. The involvement of FOXP2 in the evolution of echolocation adds weighty support to the theory that FOXP2 functions in the sensory-motor coordination of vocalisations.

Citation: Li G, Wang J, Rossiter SJ, Jones G, Zhang S (2007) Accelerated FoxP2 Evolution in Echolocating Bats. PLoS ONE 2(9): e900. doi:10.1371/journal.pone.0000900


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The above story is based on materials provided by Public Library of Science. Note: Materials may be edited for content and length.


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Public Library of Science. "Gene Involved In Human Language Development Also Involved In Bat Echolocation." ScienceDaily. ScienceDaily, 19 September 2007. <www.sciencedaily.com/releases/2007/09/070919073014.htm>.
Public Library of Science. (2007, September 19). Gene Involved In Human Language Development Also Involved In Bat Echolocation. ScienceDaily. Retrieved December 20, 2014 from www.sciencedaily.com/releases/2007/09/070919073014.htm
Public Library of Science. "Gene Involved In Human Language Development Also Involved In Bat Echolocation." ScienceDaily. www.sciencedaily.com/releases/2007/09/070919073014.htm (accessed December 20, 2014).

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