Ultrastructure and evolution of a sperm: phylogenetic implications of altered motile machinery in Ophryotrocha puerilis spermatozoon
Troyer, D.; Schwager, P.
European Journal of Cell Biology 20(2): 174-176
1979
ISSN/ISBN: 0171-9335 PMID: 520336 Document Number: 143583
Modifications to the mitochondria and flagellum of the Ophryotrocha spermatozoon render it immotile. The sperm may represent an evolutionary unstable intermediate between flagellate and aflagellate sperm types.
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