Open Close
Betran, E., Thornton, K., Long, M. (2002). Retroposed new genes out of the X in Drosophila.  Genome Res. 12(12): 1854--1859.
FlyBase ID
Publication Type
Research paper

New genes that originated by various molecular mechanisms are an essential component in understanding the evolution of genetic systems. We investigated the pattern of origin of the genes created by retroposition in Drosophila. We surveyed the whole Drosophila melanogaster genome for such new retrogenes and experimentally analyzed their functionality and evolutionary process. These retrogenes, functional as revealed by the analysis of expression, substitution, and population genetics, show a surprisingly asymmetric pattern in their origin. There is a significant excess of retrogenes that originate from the X chromosome and retropose to autosomes; new genes retroposed from autosomes are scarce. Further, we found that most of these X-derived autosomal retrogenes had evolved a testis expression pattern. These observations may be explained by natural selection favoring those new retrogenes that moved to autosomes and avoided the spermatogenesis X inactivation, and suggest the important role of genome position for the origin of new genes.

PubMed ID
PubMed Central ID
PMC187566 (PMC) (EuropePMC)
Related Publication(s)
FlyBase analysis

Summary of published retrogene analyses.
dos Santos, 2014, Summary of published retrogene analyses. [FBrf0225799]

Associated Information
Associated Files
Other Information
Secondary IDs
    Language of Publication
    Additional Languages of Abstract
    Parent Publication
    Publication Type
    Genome Res.
    Genome Research
    Publication Year
    Data From Reference