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Paternal Products and By-products in Drosophila Development

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Journal Proc Biol Sci
Specialty Biology
Date 1998 Jun 17
PMID 9628039
Citations 9
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Abstract

Tails of fertilizing spermatozoa persist throughout embryogenesis in Drosophila species and can be observed within the midguts of larvae after hatching. Throughout development, sperm proteins slowly diffuse or are stripped from the giant sperm tail residing within the embryo's anterior end. The shape and position of the sperm within the embryo are regulated such that, during organ formation, the unused portion of the sperm is enveloped by the developing midgut. This persistent, paternally derived structure is composed of the sperm's mitochondrial derivatives and appears to be defecated by the larva soon after hatching. These complex sperm-egg interactions may represent mechanisms to avoid intragenomic conflict by ensuring strictly maternal inheritance of mitochondrial DNA (mtDNA).

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