X chromosomes, retrogenes and their role in male reproduction
- PMID: 15036254
- DOI: 10.1016/j.tem.2004.01.007
X chromosomes, retrogenes and their role in male reproduction
Abstract
Retrogenes originate from their progenitor genes by retroposition. Several retrogenes reported in recent studies are autosomal, originating from X-linked progenitor genes, and have evolved a testis-specific expression pattern. During male meiosis, sex chromosomes are segregated into a so-called 'XY' body and are silenced transcriptionally. It has been widely hypothesized that the silencing of the X chromosome during male meiosis is the driving force behind the retroposition of X-linked genes to autosomes during evolution. With the advent of sequenced genomes of many species, many retrogenes can be identified and characterized. The testis-specific retrogenes might be associated with human male infertility. My goal here is to integrate recent findings, highlight controversies in the field and identify areas for further study.
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