Duplication of host genes by transposable elements
2018
The availability of large amounts of genomic and transcriptome sequences have allowed systematic surveys about the host gene sequences that have been duplicated by transposable elements. It is now clear that all super-families of transposons are capable of duplicating genes or gene fragments, and such incidents have been detected in a wide spectrum of organisms. Emerging evidence suggests that a considerable portion of them function as coding or non-coding sequences, driving innovations at molecular and phenotypic levels. Interestingly, the duplication events not only have to occur in the reproductive tissues to become heritable, but the duplicated copies are also preferentially expressed in those tissues. As a result, reproductive tissues may serve as the ‘incubator’ for genes generated by transposable elements.
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