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Articles 211 - 240 of 397
Full-Text Articles in Biology
La Diversidad De Los Análisis De Diversidad La Diversidad De Los Analisis De Diversidad [The Diversity Of Diversity Analyses], Victor D. Carmona-Galindo, Tizziana V. Carmona
La Diversidad De Los Análisis De Diversidad La Diversidad De Los Analisis De Diversidad [The Diversity Of Diversity Analyses], Victor D. Carmona-Galindo, Tizziana V. Carmona
Biology Faculty Works
There is a lack of consistency with respect to the use of the terms like species richness, diversity and biodiversity, which extends to the analysis of diversity indices and the merit of using diversity indices in the evaluation (comparison and contrast) of biological communities. The purpose of this article is to provide working definitions for these terms and cite examples from the primary literature that demonstrate the utility of estimating richness, evaluating proportional abundance patterns, as well as comparing indices of diversity and similarity to study patterns of biological organization at different ecological scales. Additionally, we provide a manual in …
The Rootscope: A Simple High-Throughput Screening System For Quantitating Gene Expression Dynamics In Plant Roots, Erin J. Kast , '15, Minh-Duyen T. Nguyen , '13, Rosalie E. Lawrence , '12, Christina Rabeler, Nicholas J. Kaplinsky
The Rootscope: A Simple High-Throughput Screening System For Quantitating Gene Expression Dynamics In Plant Roots, Erin J. Kast , '15, Minh-Duyen T. Nguyen , '13, Rosalie E. Lawrence , '12, Christina Rabeler, Nicholas J. Kaplinsky
Biology Faculty Works
Background: High temperature stress responses are vital for plant survival. The mechanisms that plants use to sense high temperatures are only partially understood and involve multiple sensing and signaling pathways. Here we describe the development of the RootScope, an automated microscopy system for quantitating heat shock responses in plant roots.Results: The promoter of Hsp17.6 was used to build a Hsp17.6(p):GFP transcriptional reporter that is induced by heat shock in Arabidopsis. An automated fluorescence microscopy system which enables multiple roots to be imaged in rapid succession was used to quantitate Hsp17.6p: GFP response dynamics. Hsp17.6(p):GFP signal increased with temperature increases from …
The Embryonic Transcriptome Of The Red-Eared Slider Turtle (Trachemys Scripta), Nicholas J. Kaplinsky, Scott F. Gilbert, J. Cebra-Thomas, K. Lilleväli, M. Saare, Eric Yanbo Chang , '13, Hannah Elizabeth Edelman , '12, Melissa Afton Frick , '12, Yin Guan , '13, Rebecca Ming Hammond , '13, Nicholas Henry Hampilos , '13, David Selassie Bampo Opoku , '12, Karim Sariahmed , '13, Eric Alan Sherman , '13, Ray Hess Bair Watson , '13
The Embryonic Transcriptome Of The Red-Eared Slider Turtle (Trachemys Scripta), Nicholas J. Kaplinsky, Scott F. Gilbert, J. Cebra-Thomas, K. Lilleväli, M. Saare, Eric Yanbo Chang , '13, Hannah Elizabeth Edelman , '12, Melissa Afton Frick , '12, Yin Guan , '13, Rebecca Ming Hammond , '13, Nicholas Henry Hampilos , '13, David Selassie Bampo Opoku , '12, Karim Sariahmed , '13, Eric Alan Sherman , '13, Ray Hess Bair Watson , '13
Biology Faculty Works
The bony shell of the turtle is an evolutionary novelty not found in any other group of animals, however, research into its formation has suggested that it has evolved through modification of conserved developmental mechanisms. Although these mechanisms have been extensively characterized in model organisms, the tools for characterizing them in non-model organisms such as turtles have been limited by a lack of genomic resources. We have used a next generation sequencing approach to generate and assemble a transcriptome from stage 14 and 17 Trachemys scripta embryos, stages during which important events in shell development are known to take place. …
Review Of "Translational Stem Cell Research: Issues Beyond The Debate On The Moral Status Of The Human Embryo" Edited By K. Hug And G. Hermerén, John B. Jenkins
Review Of "Translational Stem Cell Research: Issues Beyond The Debate On The Moral Status Of The Human Embryo" Edited By K. Hug And G. Hermerén, John B. Jenkins
Biology Faculty Works
No abstract provided.
Surprisingly Little Population Genetic Structure In A Fungus-Associated Beetle Despite Its Exploitation Of Multiple Hosts, Corlett W. Wood , '08, H. M. Donald, Vincent A. Formica, E. D. Brodie Iii
Surprisingly Little Population Genetic Structure In A Fungus-Associated Beetle Despite Its Exploitation Of Multiple Hosts, Corlett W. Wood , '08, H. M. Donald, Vincent A. Formica, E. D. Brodie Iii
Biology Faculty Works
In heterogeneous environments, landscape features directly affect the structure of genetic variation among populations by functioning as barriers to gene flow. Resource-associated population genetic structure, in which populations that use different resources (e.g., host plants) are genetically distinct, is a well-studied example of how environmental heterogeneity structures populations. However, the pattern that emerges in a given landscape should depend on its particular combination of resources. If resources constitute barriers to gene flow, population differentiation should be lowest in homogeneous landscapes, and highest where resources exist in equal proportions. In this study, we tested whether host community diversity affects population genetic …
Matrix Adhesion Polarizes Heart Progenitor Induction In The Invertebrate Chordate Ciona Intestinalis, J. Norton, J. Cooley, A. Islam, C. D. Cota, Bradley Justin Davidson , '91
Matrix Adhesion Polarizes Heart Progenitor Induction In The Invertebrate Chordate Ciona Intestinalis, J. Norton, J. Cooley, A. Islam, C. D. Cota, Bradley Justin Davidson , '91
Biology Faculty Works
Cell-matrix adhesion strongly influences developmental signaling. Resulting impacts on cell migration and tissue morphogenesis are well characterized. However, the in vivo impact of adhesion on fate induction remains ambiguous. Here, we employ the invertebrate chordate Ciona intestinalis to delineate an essential in vivo role for matrix adhesion in heart progenitor induction. In Ciona pre-cardiac founder cells, invasion of the underlying epidermis promotes localized induction of the heart progenitor lineage. We found that these epidermal invasions are associated with matrix adhesion along the pre-cardiac cell/epidermal boundary. Through targeted manipulations of RAP GTPase activity, we were able to manipulate pre-cardiac cell-matrix adhesion. …
Immobile Myosin-Ii Plays A Scaffolding Role During Cytokinesis In Budding Yeast, C. Wloka, Elizabeth Ann Vallen, Lydia Thé , '08, X. Fang, Y. Oh, E. Bi
Immobile Myosin-Ii Plays A Scaffolding Role During Cytokinesis In Budding Yeast, C. Wloka, Elizabeth Ann Vallen, Lydia Thé , '08, X. Fang, Y. Oh, E. Bi
Biology Faculty Works
Core components of cytokinesis are conserved from yeast to human, but how these components are assembled into a robust machine that drives cytokinesis remains poorly understood. In this paper, we show by fluorescence recovery after photobleaching analysis that Myo1, the sole myosin-II in budding yeast, was mobile at the division site before anaphase and became immobilized shortly before cytokinesis. This immobility was independent of actin filaments or the motor domain of Myo1 but required a small region in the Myo1 tail that is thought to be involved in higher-order assembly. As expected, proteins involved in actin ring assembly (tropomyosin and …
Variation Of Nimc1 Expression In Drosophila Stocks And Transgenic Strains, Viktor Honti, Gyöngyi Cinege, Gábor Csordás, Éva Kurucz, János Zsámboki, Cory J. Evans, Utpal Banerjee, István Andó
Variation Of Nimc1 Expression In Drosophila Stocks And Transgenic Strains, Viktor Honti, Gyöngyi Cinege, Gábor Csordás, Éva Kurucz, János Zsámboki, Cory J. Evans, Utpal Banerjee, István Andó
Biology Faculty Works
The NimC1 molecule has been described as a phagocytosis receptor, and is being used as a marker for professional phagocytes, the plasmatocytes, in Drosophila melanogaster. In studies including tumor-biology, developmental biology, and cell mediated immunity, monoclonal antibodies (P1a and P1b) to the NimC1 antigen are used. As we observed that these antibodies did not react with plasmatocytes of several strains and genetic combinations, a molecular analysis was performed on the structure of the nimC1 gene. In these strains we found 2 deletions and an insertion within the nimC1 gene, which may result in the production of a truncated NimC1 protein. …
Differential Bait Preference And Rate Of Attraction By Argentine Ants (Linepithema Humile Mayr) At Freshwater And Saltwater Marsh Sites In Southern California, Victor D. Carmona-Galindo, Meghan Moore, Melanie Tansuwan
Differential Bait Preference And Rate Of Attraction By Argentine Ants (Linepithema Humile Mayr) At Freshwater And Saltwater Marsh Sites In Southern California, Victor D. Carmona-Galindo, Meghan Moore, Melanie Tansuwan
Biology Faculty Works
Ants are a type of foraging insect species which harvests food resources based on availability. When ants locate food resources that are scarce within their habitat, they tend to be more strongly attracted to that food resource. This study used protein, carbohydrate and control based baits to examine if there was a deficiency in resources demonstrated by the ants at two different wetland habitats. We sampled Argentine ants (Linepithema humileMayr) within the saltwater and freshwater marshes of Ballona Wetlands in Los Angeles, CA. We found significant differences in the rapid deployment of Argentine ants towards protein baits over …
An Examination Of Opuntia Littoralis Fruit Volume, Sugar Concentration, Number Of Seeds And Average Seed Mass In Relation To Fitness, Victor D. Carmona, Kathleen Foster, Carolyne Hoey
An Examination Of Opuntia Littoralis Fruit Volume, Sugar Concentration, Number Of Seeds And Average Seed Mass In Relation To Fitness, Victor D. Carmona, Kathleen Foster, Carolyne Hoey
Biology Faculty Works
Organisms cannot maximize all life functions and therefore must allocate resources to maximize reproductive fitness such that they produce the highest number of surviving offspring. The object of the experiment was to evaluate variation of fruit morphology to determine how Opuntia littoralis optimizes reproductive investment. The experiment focused on fruit volume, sugar concentration, number of seeds and average seed mass on two different aspects (polar-facing and equatorial-facing slopes) in Temescal Canyon Gateway Park, Pacific Palisades, California. The results revealed fruit volume was positively correlated with number of seeds, sugar concentration was positively correlated with number of seeds, and average seed …
Assessing The Impact Of Invasive Species Management Strategies On The Population Dynamics Of Castor Bean (Ricinus Communis L., Euphorbiaceae) At Two Southern California Coastal Habitats, Victor D. Carmona, Daryle Hinton-Hardin, Jodi Kagihara, Mary Rose T. Pascua
Assessing The Impact Of Invasive Species Management Strategies On The Population Dynamics Of Castor Bean (Ricinus Communis L., Euphorbiaceae) At Two Southern California Coastal Habitats, Victor D. Carmona, Daryle Hinton-Hardin, Jodi Kagihara, Mary Rose T. Pascua
Biology Faculty Works
No abstract provided.
A Preliminary Study Of Ricinus Communis Survivorship At Ballona Wetlands And Temescal Canyon, Los Angeles, California, Victor D. Carmona-Galindo, Daryle Hinton-Hardin, Jodi Kagihara, Mary Rose Pascua
A Preliminary Study Of Ricinus Communis Survivorship At Ballona Wetlands And Temescal Canyon, Los Angeles, California, Victor D. Carmona-Galindo, Daryle Hinton-Hardin, Jodi Kagihara, Mary Rose Pascua
Biology Faculty Works
Invasive plants such as Castor bean (Ricinus communis) are known to threaten ecosystems due to their competition for resources. The Ballona Wetlands and Temescal Canyon managers employ different techniques to manage the spread of R. communis, potentially resulting in differences in plant survivorship. To investigate this possibility, height of the stems of individual R. communis plants at each site were recorded in order to assign them to cohort groups. Based on the hypothesis predicted that R. communis would have a similar cohort structure at both sites but would exhibit higher survivorship at Temescal Canyon, where R. communis …
A Small Molecule Inhibitor Of Redox-Regulated Protein Translocation Into Mitochondria, Deepa V. Dabir
A Small Molecule Inhibitor Of Redox-Regulated Protein Translocation Into Mitochondria, Deepa V. Dabir
Biology Faculty Works
The mitochondrial disulfide relay system of Mia40 and Erv1/ALR facilitates import of the small translocase of the inner membrane (Tim) proteins and cysteine-rich proteins. A chemical screen identified small molecules that inhibit Erv1 oxidase activity, thereby facilitating dissection of the disulfide relay system in yeast and vertebrate mitochondria. One molecule, mitochondrial protein import blockers from the Carla Koehler laboratory (MitoBloCK-6), attenuated the import of Erv1 substrates into yeast mitochondria and inhibited oxidation of Tim13 and Cmc1 in in vitro reconstitution assays. In addition, MitoBloCK-6 revealed an unexpected role for Erv1 in the carrier import pathway, namely transferring substrates from the …
The Relationship Between Castor Bean Stem Diameter And Extrafloral Nectary Gland Size, Victor D. Carmona, Stephen Line, Kevin Hong
The Relationship Between Castor Bean Stem Diameter And Extrafloral Nectary Gland Size, Victor D. Carmona, Stephen Line, Kevin Hong
Biology Faculty Works
This project sought to characterize plant defense investment in the castor bean (Ricinus communis L.), an exotic myrmecophyte in southern California, with respect to life history strategies. Experimental evidence suggests that exotic myrmecophytes can form mutually beneficial associations with exotic ants regardless of the differences in shared evolutionary histories. Castor bean plant investment in defense was evaluated by measuring the area on extra-floral nectary (EFN) glands. Life history strategies may change with respect to plant size and was therefore evaluated in terms of basal stem diameter (
Relationship Between Elaiosome And Efn Gland Size In Castor Bean (Ricinus Communis L.), An Exotic Mymercophyte In Southern California, Victor D. Carmona, Andrew Henslin, Lisa Liceaga
Relationship Between Elaiosome And Efn Gland Size In Castor Bean (Ricinus Communis L.), An Exotic Mymercophyte In Southern California, Victor D. Carmona, Andrew Henslin, Lisa Liceaga
Biology Faculty Works
Castor bean (Ricinus communis L.) relies on seed dispersal by attracting ants with elaiosomes; lipid rich seed appendages, which serve as a source of food for ant larvae. Additionally, castor bean petioles and inflorescences have extra floral nectary (EFN) glands that secrete sugars that also attract ants, which in return, defend against herbivores. We propose that in order to attract ants, castor bean would have to balance allocation of energy toward plant defense and seed dispersal per the Principle of Allocation. Specifically, we hypothesized that in castor bean, an increase in elaiosome size would correspond to result in …
Anthropogenic Impacts Of Irrigation On The Arthropod Community Structure Of A Coastal Sage Scrub Habitat In Los Angeles, Victor D. Carmona, Justin Aquino, Mindi Catala
Anthropogenic Impacts Of Irrigation On The Arthropod Community Structure Of A Coastal Sage Scrub Habitat In Los Angeles, Victor D. Carmona, Justin Aquino, Mindi Catala
Biology Faculty Works
We evaluated the effects of an irrigation system on the community structure of arthropods in a coastal sage scrub chaparral habitat. We placed 5 traps in the irrigated site and 5 traps in control site, for a total of 10 sticky traps (using Tree Tanglefoot) in an area adjacent to Ballona Wetlands in Los Angeles, California. The traps were set at the irrigated and non-irrigated site on Telegraph Weed for one week. Results showed that morphospecies richness, relative abundance, and taxonomic order representation were higher at the control site than at the irrigated site. Our study documents how anthropogenic impacts …
Behavior And Survival Of Mytilus Congeners Following Episodes Of Elevated Body Temperature In Air And Seawater, W. Wesley Dowd, George N. Somero
Behavior And Survival Of Mytilus Congeners Following Episodes Of Elevated Body Temperature In Air And Seawater, W. Wesley Dowd, George N. Somero
Biology Faculty Works
Coping with environmental stress may involve combinations of behavioral and physiological responses. We examined potential interactions between adult musselsʼ simple behavioral repertoire – opening/closing of the shell valves – and thermal stress physiology in common-gardened individuals of three Mytilus congeners found on the West Coast of North America: two native species (M. californianus and M. trossulus) and one invasive species from the Mediterranean (M. galloprovincialis). We first continuously monitored valve behavior over three consecutive days on which body temperatures were gradually increased, either in air or in seawater. A temperature threshold effect was evident between 25 and 33°C in several …
A Symbiotic View Of Life: We Have Never Been Individuals, Scott F. Gilbert, J. Sapp, A. I. Tauber
A Symbiotic View Of Life: We Have Never Been Individuals, Scott F. Gilbert, J. Sapp, A. I. Tauber
Biology Faculty Works
The notion of the "biological individual" is crucial to studies of genetics, immunology, evolution, development, anatomy, and physiology. Each of these biological subdisciplines has a specific conception of individuality, which has historically provided conceptual contexts for integrating newly acquired data. During the past decade, nucleic acid analysis, especially genomic sequencing and high-throughput RNA techniques, has challenged each of these disciplinary definitions by finding significant interactions of animals and plants with symbiotic microorganisms that disrupt the boundaries that heretofore had characterized the biological individual. Animals cannot be considered individuals by anatomical or physiological criteria because a diversity of symbionts are both …
Review Of "Fifty Animals That Changed The Course Of History" By E. Chaline, John B. Jenkins
Review Of "Fifty Animals That Changed The Course Of History" By E. Chaline, John B. Jenkins
Biology Faculty Works
No abstract provided.
Non-Photoperiodic Regulation Of Reproductive Physiology In The Flexibly Breeding Pine Siskin (Spinus Pinus), Heather E. Watts, Thomas P. Hahn
Non-Photoperiodic Regulation Of Reproductive Physiology In The Flexibly Breeding Pine Siskin (Spinus Pinus), Heather E. Watts, Thomas P. Hahn
Biology Faculty Works
In order to time reproduction to coincide with favorable conditions, animals use environmental cues to up- and down-regulate the reproductive axis appropriately. Although photoperiodic cues are one of the best studied of such environmental cues, animals also attend to others such as temperature, food availability, rainfall and social cues. Such non-photic cues are expected to be particularly important for tropical species and temperate-zone species that exhibit flexible or opportunistic breeding schedules. In this study, we investigate the use of non-photic cues, specifically food availability and social cues, to time the initiation of reproductive development in the pine siskin (Spinus …
Morphological Correlates Of A Combat Performance Trait In The Forked Fungus Beetle, Bolitotherus Cornutus, K. M. Benowitz, E. D. Brodie Iii, Vincent A. Formica
Morphological Correlates Of A Combat Performance Trait In The Forked Fungus Beetle, Bolitotherus Cornutus, K. M. Benowitz, E. D. Brodie Iii, Vincent A. Formica
Biology Faculty Works
Combat traits are thought to have arisen due to intense male-male competition for access to females. While large and elaborate weapons used in attacking other males have often been the focus of sexual selection studies, defensive traits (both morphological and performance) have received less attention. However, if defensive traits help males restrict access to females, their role in the process of sexual selection could also be important. Here we examine the morphological correlates of grip strength, a defensive combat trait involved in mate guarding, in the tenebrionid beetle Bolitotherus cornutus. We found that grip strength was repeatable and differed between …
Dietary Lipid Saturation Influences Environmental Temperature Preference But Not Resting Metabolic Rate In The Djungarian Hamster (Phodopus Sungorus), Ryan Pannorfi , '04, Barry Michael Zee , '08, I. Vatnick, N. Berner, Sara Hiebert Burch
Dietary Lipid Saturation Influences Environmental Temperature Preference But Not Resting Metabolic Rate In The Djungarian Hamster (Phodopus Sungorus), Ryan Pannorfi , '04, Barry Michael Zee , '08, I. Vatnick, N. Berner, Sara Hiebert Burch
Biology Faculty Works
Heterothermic rodents increase self-selection of diets rich in polyunsaturated fatty acids (PUFAs) when exposed to cold, short days, or short-day melatonin profiles, and Djungarian hamsters (Phodopus sungorus) do so in long days in response to cold exposure alone. To determine whether Djungarian hamsters are also capable of selecting a thermal environment in response to dietary lipid composition, continuously normothermic hamsters were fed either a PUF-rich diet or a diet rich in saturated fatty acids (SFAs) for 6-10 wk and given a choice of thermal environments. As predicted, SF-fed hamsters were more likely than PUFA-fed hamsters to occupy the single heated …
Challenges For Biological Interpretation Of Environmental Proteomics Data In Non-Model Organisms, Wesley W. Dowd
Challenges For Biological Interpretation Of Environmental Proteomics Data In Non-Model Organisms, Wesley W. Dowd
Biology Faculty Works
Environmental physiology, toxicology, and ecology and evolution stand to benefit substantially from the relatively recent surge of “omics” technologies into these fields. These approaches, and proteomics in particular, promise to elucidate novel and integrative functional responses of organisms to diverse environmental challenges, over a variety of time scales and at different levels of organization. However, application of proteomics to environmental questions suffers from several challenges—some unique to high-throughput technologies and some relevant to many related fields—that may confound downstream biological interpretation of the data. I explore three of these challenges in environmental proteomics, emphasizing the dependence of biological conclusions on …
A Drosophila Deg/Enac Subunit Functions Specifically In Gustatory Neurons Required For Male Courtship Behavior, E. Starostina, T. Liu, V. Vijayan, Zheng Zheng , '11, Kathleen King Siwicki, C. W. Pikielny
A Drosophila Deg/Enac Subunit Functions Specifically In Gustatory Neurons Required For Male Courtship Behavior, E. Starostina, T. Liu, V. Vijayan, Zheng Zheng , '11, Kathleen King Siwicki, C. W. Pikielny
Biology Faculty Works
Detection of specific female pheromones stimulates courtship behavior in Drosophila melanogaster males, but the chemosensory molecules, cells, and mechanisms involved remain poorly understood. Here we show that ppk25, a DEG/ENaC ion channel subunit required for normal male response to females, is expressed at highest levels in a single sexually dimorphic gustatory neuron of most taste hairs on legs and wings, but not in neurons that detect courtship-inhibiting pheromones or food. Synaptic inactivation of ppk25-expressing neurons, or knockdown of ppk25 expression in all gustatory neurons, significantly impairs male response to females, whereas gustatory expression of ppk25 rescues the courtship behavior of …
Role Of Twin Cys-Xaa9-Cys Motif Cysteines In Mitochondrial Import Of The Cytochrome C Oxidase Biogenesis Factor Cmc1, Deepa V. Dabir
Role Of Twin Cys-Xaa9-Cys Motif Cysteines In Mitochondrial Import Of The Cytochrome C Oxidase Biogenesis Factor Cmc1, Deepa V. Dabir
Biology Faculty Works
The Mia40 import pathway facilitates the import and oxidative folding of cysteine-rich protein substrates into the mitochondrial intermembrane space. Here we describe the in vitro and in organello oxidative folding of Cmc1, a twin CX9C-containing substrate, which contains an unpaired cysteine. In vitro, Cmc1 can be oxidized by the import receptor Mia40 alone when in excess or at a lower rate by only the sulfhydryl oxidase Erv1. However, physiological and efficient Cmc1 oxidation requires Erv1 and Mia40. Cmc1 forms a stable intermediate with Mia40 and is released from this interaction in the presence of Erv1. The three proteins are shown …
Society, Demography And Genetic Structure In The Spotted Hyena, Heather E. Watts
Society, Demography And Genetic Structure In The Spotted Hyena, Heather E. Watts
Biology Faculty Works
Spotted hyenas (Crocuta crocuta) are large mammalian carnivores, but their societies, called 'clans', resemble those of such cercopithecine primates as baboons and macaques with respect to their size, hierarchical structure, and frequency of social interaction among both kin and unrelated group-mates. However, in contrast to cercopithecine primates, spotted hyenas regularly hunt antelope and compete with group-mates for access to kills, which are extremely rich food sources, but also rare and ephemeral. This unique occurrence of baboon-like sociality among top-level predators has favoured the evolution of many unusual traits in this species. We briefly review the relevant socio-ecology of spotted hyenas, …
Biophysics, Environmental Stochasticity, And The Evolution Of Thermal Safety Margins In Intertidal Limpets, W. Wesley Dowd, M. W. Denny
Biophysics, Environmental Stochasticity, And The Evolution Of Thermal Safety Margins In Intertidal Limpets, W. Wesley Dowd, M. W. Denny
Biology Faculty Works
As the air temperature of the Earth rises, ecological relationships within a community might shift, in part due to differences in the thermal physiology of species. Prediction of these shifts – an urgent task for ecologists – will be complicated if thermal tolerance itself can rapidly evolve. Here, we employ a mechanistic approach to predict the potential for rapid evolution of thermal tolerance in the intertidal limpet Lottia gigantea. Using biophysical principles to predict body temperature as a function of the state of the environment, and an environmental bootstrap procedure to predict how the environment fluctuates through time, we create …
Expanding The Temporal Dimensions Of Developmental Biology: The Role Of Environmental Agents In Establishing Adult-Onset Phenotypes, Scott F. Gilbert
Expanding The Temporal Dimensions Of Developmental Biology: The Role Of Environmental Agents In Establishing Adult-Onset Phenotypes, Scott F. Gilbert
Biology Faculty Works
Developmental biology is expanding into several new areas. One new area of study concerns the production of adult-onset phenotypes by exposure of the fetus or neonate to environmental agents. These agents include maternal nutrients, developmental modulators (endocrine disruptors), and maternal care. In all three cases, a major mechanism for the generation of the altered phenotype is chromatin modification. Nutrient conditions, developmental modulators, and even maternal care appear to alter DNA methylation and other associated changes in chromatin that regulate gene expression. This brings a new, under-appreciated, dimension of gene regulation into developmental biology, and it also demonstrates the poverty of …
Fertilization Narratives In The Art Of Gustav Klimt, Diego Rivera And Frida Kahlo: Repression, Domination And Eros Among Cells, Scott F. Gilbert, S. Brauckmann
Fertilization Narratives In The Art Of Gustav Klimt, Diego Rivera And Frida Kahlo: Repression, Domination And Eros Among Cells, Scott F. Gilbert, S. Brauckmann
Biology Faculty Works
Fertilization narratives are powerful biological stories that can be used for social ends, and 20th-century artists have used fertilization-based imagery to convey political and social ideas. In Danae, Gustav Klimt used an esoteric stage of early human embryos to indicate successful fertilization and the inability of government repression to stifle creativity. In Man, Controller of the Universe, Diego Rivera painted a mural of a man controlling an ovulating ovary, depicting Trotsky's view that society will rationally regulate human fertilization. His former wife, Frida Kahlo, refuted this view in Moses: Nucleus of Creation, wherein she painted images of fertilization and embryo …
The Decline Of Soft Inheritance, Scott F. Gilbert
The Decline Of Soft Inheritance, Scott F. Gilbert
Biology Faculty Works
No abstract provided.