<P> A newer publication shows the genetic admixture of the Africanised honeybees in Brazil . The small number of honeybees (Apis mellifera) with African ancestry that were introduced to Brazil ~ 60 years ago, which dispersed and hybridized with existing managed populations of European origin, quickly spreading across much of the Americas in an example of a massive biological invasion as earlier told in this article . Here, they analysed whole ‐ genome sequences of 32 Africanized honeybees sampled from throughout Brazil to study the effect of this process on genome diversity . By comparison with ancestral populations from Europe and Africa, they infer that these samples had 84% African ancestry, with the remainder from western European populations . However, this proportion varied across the genome and they identified signals of positive selection in regions with high European ancestry proportions . These observations are largely driven by one large gene ‐ rich 1.4 Mbp segment on chromosome 11 where European haplotypes are present at a significantly elevated frequency and likely confer an adaptive advantage in the Africanized honeybee population </P> <Table> <Tr> <Td> </Td> <Td> hide This section has multiple issues . Please help improve it or discuss these issues on the talk page . (Learn how and when to remove these template messages) <Table> <Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (January 2015) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Table> <Tr> <Td> </Td> <Td> This section possibly contains original research . Please improve it by verifying the claims made and adding inline citations . Statements consisting only of original research should be removed . (September 2015) (Learn how and when to remove this template message) </Td> </Tr> </Table> (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> hide This section has multiple issues . Please help improve it or discuss these issues on the talk page . (Learn how and when to remove these template messages) <Table> <Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (January 2015) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Table> <Tr> <Td> </Td> <Td> This section possibly contains original research . Please improve it by verifying the claims made and adding inline citations . Statements consisting only of original research should be removed . (September 2015) (Learn how and when to remove this template message) </Td> </Tr> </Table> (Learn how and when to remove this template message) </Td> </Tr> <Table> <Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (January 2015) (Learn how and when to remove this template message) </Td> </Tr> </Table>

Where did the africanized honey bee originally come from