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La symbiose du spermatozoide et de l'ovule, origine de l'ontogenese et de la phylogenese des metazoaires

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Abstract

The origin of metazoa implies the passage from an eukarote protozoan to a protozygote ancestor of a metazoan zygote. The most probable hypothesis is that of a symbiotic origin of the first zygote by association of two protists one signifying a spherical oocell and the other a flagellated spermatozoan; this could be the first step of the metazoan ontogenesis and therefore also of the phylogenesis. The genesis can also be explained by two haploid genomes NX NY, three gametes (two spermatozoa and one ovule), NX apparently being able to create both forms, and two zygotes. A double symbiosis, a chromosomic crossing-over and a selective expulsion can prove it.

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  1. Service médical de l'Assurance maladie, échelon régional, Paris, France

    J. Costagliola

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  1. J. Costagliola
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Costagliola, J. La symbiose du spermatozoide et de l'ovule, origine de l'ontogenese et de la phylogenese des metazoaires. Acta Biotheor 40, 253–260 (1992). https://doi.org/10.1007/BF00168153

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  • DOI: https://doi.org/10.1007/BF00168153

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