Results 31 to 40 of about 414 (161)
Increased diversification rates follow shifts to bisexuality in liverworts [PDF]
, 2016 Shifts in sexual systems are one of the key drivers of species diversification. In contrast to angiosperms, unisexuality prevails in bryophytes. Here, we test the hypotheses that bisexuality evolved from an ancestral unisexual condition and is a key ...
Jairo Patiño +22 more
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BMC Genomics, 2021 Background The genetic control of sex determination in teleost species is poorly understood. This is partly because of the diversity of mechanisms that determine sex in this large group of vertebrates, including constitutive genes linked to sex ...
Andrew Catanach +10 more
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Time and time again: unisexual salamanders (genus Ambystoma) are the oldest unisexual vertebrates
BMC Evolutionary Biology, 2010 The age of unisexual salamanders of the genus Ambystoma is contentious. Recent and ancient evolutionary histories of unisexual Ambystoma were proposed by a few separate studies that constructed phylogenies using mitochondrial DNA markers (cytochrome b gene vs. non-coding region).
Bi, Ke, Bogart, James P
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Vitis Flower Sex Specification Acts Downstream and Independently of the ABCDE Model Genes
Frontiers in Plant Science, 2018 The most discriminating characteristic between the cultivated Vitis vinifera subsp. vinifera and the wild-form Vitis vinifera subsp. sylvestris is their sexual system.
João L. Coito +7 more
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Unisexual Reproduction of Cryptococcus gattii
PLoS ONE, 2014 Cryptococcus gattii is a basidiomycetous human fungal pathogen that typically causes infection in tropical and subtropical regions and is responsible for an ongoing outbreak in immunocompetent individuals on Vancouver Island and in the Pacific Northwest of the US.
Sujal S Phadke +4 more
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Unisexual Reproduction Reverses Muller’s Ratchet [PDF]
Genetics, 2014 AbstractCryptococcus neoformans is a pathogenic basidiomycetous fungus that engages in outcrossing, inbreeding, and selfing forms of unisexual reproduction as well as canonical sexual reproduction between opposite mating types. Long thought to be clonal, >99% of sampled environmental and clinical isolates of C.
Kevin C, Roach, Joseph, Heitman
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Dicliny in Bouteloua (Poaceae: Chloridoideae): Implications for the Evolution of Dioecy [PDF]
, 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
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Population systems of Eurasian water frogs (Pelophylax) in the south of Ukraine
Biosystems Diversity, 2020 Ecological and evolutionary consequences of population-genetic processes that occur because of natural cross-species hybridization can show mechanisms of overcoming the reproductive barrier and obtaining the species status by a hybrid taxon.
N. M. Suriadna +3 more
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Nonrandom patterns of genetic admixture expose the complex historical hybrid origin of unisexual leaf beetle species in the genus Calligrapha [PDF]
, 2014 Many unisexual animal lineages supposedly arose from hybridization. However, support for their putative hybrid origins mostly comes from indirect methodologies, which are rarely confirmatory.
Montelongo, Tinguaro +1 more
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ARE UNISEXUAL FLOWERS PRIMITIVE? [PDF]
New Phytologist, 1986 SummarySporne's statistical evaluation of primitiveness in angiosperms has generated a good deal of controversy, mainly because his identification of unisexual flowers as primitive is at variance with most other interpretations of angiosperm evolution.
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