Reproductive Compatibility
Mostrando 13-17 de 17 artigos, teses e dissertações.
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13. Cytoplasmic Incompatibility and Bacterial Density in Nasonia Vitripennis
Cytoplasmically (maternally) inherited bacteria that cause reproductive incompatibility between strains are widespread among insects. In the parasitoid wasp Nasonia, incompatibility results in improper condensation and fragmentation of the paternal chromosomes in fertilized eggs. Some form of genome imprinting may be involved. Because of haplodiploidy, incom
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14. Asymmetrical crossing barriers in angiosperms.
Patterns of reproductive isolation between species may provide insight into the mechanisms and evolution of barriers to interspecific gene exchange. We used data from published interspecific hybridization experiments from 14 genera of angiosperms in order to test for the presence of asymmetrical barriers to gene exchange. Reproductive isolation was examined
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15. Single and Double Infections with Wolbachia in the Parasitic Wasp Nasonia Vitripennis: Effects on Compatibility
Wolbachia are cytoplasmically inherited bacteria responsible for reproductive incompatibility in a wide range of insects. There has been little exploration, however, of within species Wolbachia polymorphisms and their effects on compatibility. Here we show that some strains of the parasitic wasp Nasonia vitripennis are infected with two distinct bacterial st
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16. Models of Evolution of Reproductive Isolation
Mathematical models are presented for the evolution of postmating and premating reproductive isolation. In the case of postmating isolation it is assumed that hybrid sterility or inviability is caused by incompatibility of alleles at one or two loci, and evolution of reproductive isolation occurs by random fixation of different incompatibility alleles in dif
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17. An Interspecific Backcross of Lycopersicon Esculentum X L. Hirsutum: Linkage Analysis and a Qtl Study of Sexual Compatibility Factors and Floral Traits
A BC(1) population of the self-compatible tomato Lycopersicon esculentum and its wild self-incompatible relative L. hirsutum f. typicum was used for restriction fragment length polymorphism linkage analysis and quantitative trait loci (QTL) mapping of reproductive behavior and floral traits. The self-incompatibility locus, S, on chromosome 1 harbored the onl