Results 101 to 110 of about 949 (172)

Dicliny in Bouteloua (Poaceae: Chloridoideae): Implications for the Evolution of Dioecy [PDF]

open access: yes, 2007
The New World grass genus Bouteloua (Chloridoideae: Cynodonteae) comprises 57 species, 13 of which produce unisexual spikelets and hence are diclinous. Andromonoecy, gynodioecy, monoecy, trimonoecy, and dioecy all occur in the genus, and ten species are ...
Columbus, J. Travis   +2 more
core   +3 more sources

Mating system, sex ratio, and persistence of females in the gynodioecious shrub Daphne laureola L. (Thymelaeaceae) [PDF]

open access: yes, 2004
Although in gynodioecious populations male steriles require a fecundity advantage to compensate for their gametic disadvantage, southern Spanish populations of the long-lived shrub Daphne laureola do not show any fecundity advantage over hermaphrodites ...
Azizan, Amizon   +8 more
core   +1 more source

Hermaphrodite life history and the maintenance of partial selfing in experimental populations of Caenorhabditis elegans [PDF]

open access: yes, 2014
Classic population genetics theory predicts that mixed reproductive systems, where self reproduction (selfing) and outcrossing co-exist, should not be as common as they are in nature. One means of reconciling theory with observations is to recognize that
Carvalho, Sara   +2 more
core   +3 more sources

Sex and Size in Cosexual Plants [PDF]

open access: yes, 1997
There are conceptual and practical difficulties in measuring the exact shape of fitness-gain curves and sex allocation, and these hamper empirical testing of some of the predictions of sex allocation theory for plants.
Jong, T.J. de   +2 more
core   +1 more source

Immune-Related Transcriptional Responses to Parasitic Infection in a Naturally Inbred Fish: Roles of Genotype and Individual Variation [PDF]

open access: yes, 2018
Parasites are strong drivers of evolutionary change and the genetic variation of both host and parasite populations can co-evolve as a function of parasite virulence and host resistance.
Carlos Garcia de Leaniz   +5 more
core   +1 more source

Utilisation de la PCR-RFLP sur de l'ADN chloro-plastique pour l'étude des relations phylogénétiques au sein du genre Phaseolus [PDF]

open access: yes, 1998
Phylogenetic relationships among 74 accessions belonging to six species of Phaseolus are investigated using variation in chloroplast DNA assessed according to a PCR-RFLP protocol. Three fragments of chloroplast DNA are amplified using universal primers,
Baudoin JP.   +4 more
core  

Chemosensory adaptations in Caenorhabditis males during the establishment of androdioecy

open access: yesBiology Letters
Caenorhabditis elegans has evolved from its dioecious ancestors to adopt an androdioecious reproductive strategy. In this process, ancestral female C. elegans acquired genetic modifications that enabled self-sperm generation, self-sperm activation and a reduced reliance on
Harini Kannan, King L. Chow
openaire   +2 more sources

What is functional androdioecy? [PDF]

open access: yesFunctional Ecology, 2002
openaire   +1 more source

Investigating the consequences of the mating system for drug resistance evolution in <i>Caenorhabditis elegans</i>. [PDF]

open access: yesProc Biol Sci
Trubenová B   +5 more
europepmc   +1 more source

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