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Now showing items 11-20 of 38
Hybridization in two subspecies of triodanis perfoliata, a cleistogamous annual plant (campanualaceae)
(East Carolina University, 2013)
The presence of a cleistogamous (obligately selfing) plant breeding system may have implications for reproductive isolation between species. The effects of this trait on plant hybridization previously have received little ...
Assessing cellular and genomic damage from environmental nickel using a GFP containing strain of Caenorhabditis elegans
(East Carolina University, 2013)
Nickel is a naturally found mineral that has become widely used for many electronic devices. As use and subsequent discarding of nickel containing products continues exposure to nickel increases. Nickel can cause external ...
Three Generations, One Future: A Systematic Analysis on Nicotine's Effect across generations in C. elegans.
(East Carolina University, 2013)
Tobacco smoking is a worldwide epidemic that is responsible for diseases and death rates that surpass those attributed to a combination of other causes (e.g. cancer, HIV, accidents). A major mediator of tobacco-smoke related ...
Experimental evidence for predator learning and Müllerian mimicry in Peruvian poison frogs (Ranitomeya, Dendrobatidae)
(East Carolina University, 2013)
Poison frogs are characterized by bright coloration, striking patterns, and toxicity; they have thus become a classic example of aposematism. Ranitomeya imitator mimics three congeneric model species (R. fantastica, R. ...
Phenotypic and Genetic Divergence among Poison Frog Populations in a Mimetic Radiation
(2013)
The evolution of Müllerian mimicry is, paradoxically, associated with high levels of diversity in color and pattern. In a mimetic radiation, different populations of a species evolve to resemble different models, which can ...
A dominant allele controls development into female mimic male and diminutive female ruffs
(2013-12)
Maintaining polymorphisms for genes with effects of ecological significance may involve conflicting selection in males and females. We present data from a captive population of ruffs (Philomachus pugnax) showing that a ...
Genetic mapping of the female mimic morph locus in the ruff
(2013)
Background
Ruffs (Aves: Philomachus pugnax) possess a genetic polymorphism for male mating behaviour resulting in three permanent alternative male reproductive morphs: (i) territorial ‘Independents’, (ii) non-territorial ...
Horizontal gene transfer of epigenetic machinery and evolution of parasitism in the malaria parasite Plasmodium falciparum and other apicomplexans
(2013)
Background
The acquisition of complex transcriptional regulatory abilities and epigenetic machinery facilitated the transition of the ancestor of apicomplexans from a free-living organism to an obligate parasite. The ...
Genetic variation corroborates subspecific delimitation in the Namib fog-basking beetle, (Haag) (Tenebrionidae, Coleoptera)
(2013)
The fog-basking beetle, Onymacris unguicularis (Haag, 1875), is currently listed as a polytypic form comprising two subspecies. A flightless substrate specialist, the beetleis endemic to vegetationless dunes in the Namib, ...
USING LASER CAPTURE MICRODISSECTION (LCM) TO EXAMINE MADS-BOX GENE EXPRESSION IN THE UPPER AND LOWER FLORAL MERISTEMS OF MAIZE
(East Carolina University, 2013)
MADS-box transcription factors are important regulators of flower development in all flowering plants. In the grasses, flowers (called florets) are contained in spikelets. Maize spikelets contain two florets (the upper and ...