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Articles 601 - 630 of 1043

Full-Text Articles in Biology

Selective Mutation Accumulation: A Computational Model Of The Paternal Age Effect, Eoin C. Whelan, Alexander C. Nwala, Christopher Osgood, Stephan Olariu Jan 2016

Selective Mutation Accumulation: A Computational Model Of The Paternal Age Effect, Eoin C. Whelan, Alexander C. Nwala, Christopher Osgood, Stephan Olariu

Biological Sciences Faculty Publications

Motivation: As the mean age of parenthood grows, the effect of parental age on genetic disease and child health becomes ever more important. A number of autosomal dominant disorders show a dramatic paternal age effect due to selfish mutations: substitutions that grant spermatogonial stem cells (SSCs) a selective advantage in the testes of the father, but have a deleterious effect in offspring. In this paper we present a computational technique to model the SSC niche in order to examine the phenomenon and draw conclusions across different genes and disorders.

Results: We used a Markov chain to model the probabilities of …


Resurgence Of Acropora Corals On Mid Shelf Patch Reefs, Southwater Caye Marine Reserve, Central Belize, Jillian J. Keefer Jan 2016

Resurgence Of Acropora Corals On Mid Shelf Patch Reefs, Southwater Caye Marine Reserve, Central Belize, Jillian J. Keefer

Undergraduate Honors Thesis Projects

Acropora cervicornis (staghorn) and Acropora palmata (elkhorn) are ecologically important corals that grow quickly and provide topography and refuges for fish and invertebrates. Historically, Acropora was the most abundant coral in shallow patch reef zones in the Caribbean. During the 1980s, white band disease eliminated most Acropora causing a loss in rugosity and an increase of macroalgae on many reefs. Although Acropora remains rare throughout most of the Caribbean, this study documents its partial comeback and possible limiting factors in Southwater Caye Marine Reserve (SWCMR), Central Belize. Patch reefs in the reserve averaged 19% live coral cover with A. palmata …


When The Leaves Fall: Modeling Seasonal Variation Of Litter Flux In An Urban Forest, Scott W. Oswald Jan 2016

When The Leaves Fall: Modeling Seasonal Variation Of Litter Flux In An Urban Forest, Scott W. Oswald

Honors College Theses

I propose a statistical model to describe the seasonal variation in forest litter flux rates. To examine the effectiveness of the proposed model and to estimate the model parameters, a small set of litter flux data was collected. Data collection was continuous from November 2014 to January 2016. Model parameters were estimated from the data. Using the estimated parameters, the model was applied to an existing dataset to provide some evidence of the model's potential to predict future litter flux rates. While the model did reasonably fit the data, it only had some limited success at prediction. Future research is …


The Role Of Valproic Acid, A Histone Deacetylase Inhibitor, In Reducing Anxiety Levels In Rats: An Epigenetics Study, Juliet Buteme Dec 2015

The Role Of Valproic Acid, A Histone Deacetylase Inhibitor, In Reducing Anxiety Levels In Rats: An Epigenetics Study, Juliet Buteme

Honors College Theses

Rats, like humans, show personality traits: they are born with different anxiety levels (i.e., high (HAn) or low anxiety (LAn) levels). In this study, we investigated (1) if treatment with valproic acid (VPA) can lower anxiety level in trait anxiety rats and (2) how VPA may interact with environment (e.g., enriched (EE), standard (SE) and isolated environments (IE)). VPA is a deacetylase inhibitor that increases Histone 3 acetylation, a known epigenetic mechanism that interacts with stress response proteins, and treats epilepsy and mood disorders. Since rats reared in IE exhibit heightened anxiety levels as compared to those in EE, we …


Readings On Current Biology: Bibliography, Imsa Biology Team Oct 2015

Readings On Current Biology: Bibliography, Imsa Biology Team

Nature of Science

No abstract provided.


Science & Spaghetti Monsters: Understanding The Nature Of Scientific Knowledge & Research, Sarah O'Leary-Driscoll Oct 2015

Science & Spaghetti Monsters: Understanding The Nature Of Scientific Knowledge & Research, Sarah O'Leary-Driscoll

Nature of Science

What is science?

When students are asked to define science, many of them define science as “a body of knowledge gained by performing experiments.”

A more appropriate definition, however, is that “Science is … a process of inquiry aimed at building a testable body of knowledge open to rejection or confirmation” (Shermer, 2005).

There are three important points that this definition makes:


Essential Questions, Imsa Biology Team Oct 2015

Essential Questions, Imsa Biology Team

Evolution

In order to understand the current state of biological life and how it has changed over time, the following questions must be addressed:


Evidence Of Evolution 1: Structures, Imsa Biology Team Oct 2015

Evidence Of Evolution 1: Structures, Imsa Biology Team

Evolution

In order to investigate linage, evolutionary history, and common ancestry, you need to be familiar with the following structures.


Mechanisms And Speciation 1: The Modern Synthesis, Imsa Biology Team Oct 2015

Mechanisms And Speciation 1: The Modern Synthesis, Imsa Biology Team

Evolution

The Modern Synthesis or Synthetic Theory of Evolution is an explanation of evolution that is based on modern genetic principles. According to the Modern Synthesis (a.k.a. Neo-Darwinism):


Evolution Practice 1, Imsa Biology Team Oct 2015

Evolution Practice 1, Imsa Biology Team

Evolution

Answer the following questions using information from the handouts, and examples from the LAB


Evolution Practice 2, Imsa Biology Team Oct 2015

Evolution Practice 2, Imsa Biology Team

Evolution

Evolution Problems


Genetic Drift Simulation, Imsa Biology Team Oct 2015

Genetic Drift Simulation, Imsa Biology Team

Evolution

Genetic drift can be defined as a random fluctuation in gene frequency. More specifically, it tells us that different alleles may increase or decrease in a population in proportion to one another over time, just by chance, rather than due to any fitness advantage.


Principles Of Biology Ii (Dalton State College), Susan Burran, David Desrochers Oct 2015

Principles Of Biology Ii (Dalton State College), Susan Burran, David Desrochers

Biological Sciences Grants Collections

This Grants Collection uses the grant-supported lab manual Principles of Biology II from Dalton State College:

http://oer.galileo.usg.edu/biology-textbooks/2

This Grants Collection for Principles of Biology II was created under a Round Two ALG Textbook Transformation Grant.

Affordable Learning Georgia Grants Collections are intended to provide faculty with the frameworks to quickly implement or revise the same materials as a Textbook Transformation Grants team, along with the aims and lessons learned from project teams during the implementation process.

Documents are in .pdf format, with a separate .docx (Word) version available for download. Each collection contains the following materials:

  • Linked Syllabus
  • Initial …


Essential Questions, Imsa Biology Team Oct 2015

Essential Questions, Imsa Biology Team

Nature of Science

Questions that must be addressed in order to understand the current state of biological life and how it has changed over time.


Nature Of Science Pre-Questions, Imsa Biology Team Oct 2015

Nature Of Science Pre-Questions, Imsa Biology Team

Nature of Science

No abstract provided.


Course Syllabus: Fall 2015, Imsa Biology Team Oct 2015

Course Syllabus: Fall 2015, Imsa Biology Team

Nature of Science

No abstract provided.


Evidence Of Evolution 3: Evolutionary Evidence And Inferences Lab: A Discussion Guide, Imsa Biology Team Oct 2015

Evidence Of Evolution 3: Evolutionary Evidence And Inferences Lab: A Discussion Guide, Imsa Biology Team

Evolution

This lab activity was designed to provide you with opportunities to make inferences and draw conclusions about evolution and the common ancestry of various animals based on their anatomical characteristics and comparative anatomy. You will be given tasks to accomplish or questions to answer at each of 11 stations. In order to do this successfully, you must make careful observations of the specimens on display.


Current Readings In Biology: Guiding Questions, Imsa Biology Team Oct 2015

Current Readings In Biology: Guiding Questions, Imsa Biology Team

Nature of Science

No abstract provided.


Post-Assessment, Imsa Biology Team Oct 2015

Post-Assessment, Imsa Biology Team

Nature of Science

No abstract provided.


Principles Of Biology I (Dalton State College), Susan Burran, David Desrochers Oct 2015

Principles Of Biology I (Dalton State College), Susan Burran, David Desrochers

Biological Sciences Grants Collections

This Grants Collection uses the grant-supported lab manual Principles of Biology I from Dalton State College:

http://oer.galileo.usg.edu/biology-textbooks/3

This Grants Collection for Principles of Biology I was created under a Round Two ALG Textbook Transformation Grant.

Affordable Learning Georgia Grants Collections are intended to provide faculty with the frameworks to quickly implement or revise the same materials as a Textbook Transformation Grants team, along with the aims and lessons learned from project teams during the implementation process.

Documents are in .pdf format, with a separate .docx (Word) version available for download. Each collection contains the following materials:

  • Linked Syllabus
  • Initial …


Principles Of Biology I (Valdosta State University), Joshua Reece, John Elder, Emily Cantonwine, Mark Blackmore, Eric Chambers Oct 2015

Principles Of Biology I (Valdosta State University), Joshua Reece, John Elder, Emily Cantonwine, Mark Blackmore, Eric Chambers

Biological Sciences Grants Collections

This Grants Collection uses the grant-supported lecture slides to Principles of Biology I from Valdosta State University:

http://oer.galileo.usg.edu/biology-ancillary/1/

This Grants Collection for Principles of Biology I was created under a Round Two ALG Textbook Transformation Grant.

Affordable Learning Georgia Grants Collections are intended to provide faculty with the frameworks to quickly implement or revise the same materials as a Textbook Transformation Grants team, along with the aims and lessons learned from project teams during the implementation process.

Documents are in .pdf format, with a separate .docx (Word) version available for download. Each collection contains the following materials:

  • Linked Syllabus …


Evidence Of Evolution 2: Definitions For Evolutionary Evidence Lab, Imsa Biology Team Oct 2015

Evidence Of Evolution 2: Definitions For Evolutionary Evidence Lab, Imsa Biology Team

Evolution

This lab activity was designed to provide you with opportunities to make inferences and draw conclusions about evolution and the common ancestry of various animals based on their anatomical characteristics and comparative anatomy. You will be given tasks to accomplish or questions to answer at each of 11 stations. In order to do this successfully, you must make careful observations of the specimens on display. You must also know the following definitions before beginning this activity:


Mechanisms And Speciation 2: Evolution On The Web Questions, Imsa Biology Team Oct 2015

Mechanisms And Speciation 2: Evolution On The Web Questions, Imsa Biology Team

Evolution

The website below, sponsored by UC Berkeley, is a reliable source for information about evolution. This will give you the introductory information about the mechanisms of Evolution.


Lifelines Fall 2015, Southern Adventist University Oct 2015

Lifelines Fall 2015, Southern Adventist University

Lifelines - Biology Department Newsletter

The Fall 2015 issue of Lifelines features articles on undergraduate research on dinosaurs and spiders, an alumni spotlight, student missions to Bolivia, and updates on department happenings.


An Investigation Into The Biological Responses Induced Following Oral Exposure To Silver Nanoparticles, Anna Murphy Oct 2015

An Investigation Into The Biological Responses Induced Following Oral Exposure To Silver Nanoparticles, Anna Murphy

Doctoral

This study aims to investigate the biological responses induced by silver nanoparticles (AgNP) following oral exposure. The commonality of AgNP in consumer goods highlights the need for a thorough investigation into the interaction with and subsequent responses evoked in living systems following exposure. Firstly, the potential interaction with and effect of biofluid components, namely cholic acid (CA), deoxycholic acid (DCA) and ursodeoxycholic acid (UDCA), on AgNP toxicity was investigated. Two cell lines corresponding to organs related to the biofluid components, HepG-2 a hepatocellular carcinoma derived from liver tissue and Hep2 an epithelial cell line, were employed. Physicochemical and cytotoxic screening …


Principles Of Biology Ii Lab Manual, Susan Burran, David Desrochers Oct 2015

Principles Of Biology Ii Lab Manual, Susan Burran, David Desrochers

Biological Sciences Open Textbooks

This lab manual was created for BIOL 1108, Principles of Biology II, through an ALG Textbook Transformation Grant. Copies of this lab manual by chapter are also available at http://libguides.daltonstate.edu/PrinciplesofBiology/labmanual.

Accessible files with optical character recognition (OCR) and auto-tagging provided by the Center for Inclusive Design and Innovation.


Principles Of Biology I Lab Manual, Susan Burran, David Desrochers Oct 2015

Principles Of Biology I Lab Manual, Susan Burran, David Desrochers

Biological Sciences Open Textbooks

This lab manual was created for BIOL 1107, Principles of Biology I, through an ALG Textbook Transformation Grant. Copies of this lab manual by chapter are also available at http://libguides.daltonstate.edu/PrinciplesofBiology/labmanual.

Accessible files with optical character recognition (OCR) and auto-tagging provided by the Center for Inclusive Design and Innovation.


Book Reviews, Robert D. Aldridge, Michael B. Thompson, Malorie M. Hayes, Rafael O. De Sá, Christopher G. Lowe Sep 2015

Book Reviews, Robert D. Aldridge, Michael B. Thompson, Malorie M. Hayes, Rafael O. De Sá, Christopher G. Lowe

Biology Faculty Publications

Reproductive Biology and Phylogeny of Lizards and Tuatara. J. L. Rheubert, D. S. Siegel, and S. E. Trauth (Eds.). 2014. CRC Press. ISBN 9781466579866. 760 p. $143.96 (hardcover).—

According to the authors, this book was intended to summarize the current knowledge of phylo- geny and reproduction of the Lepidosauria. I believe the authors have achieved their goal. Many of the chapters in this book are derived from presentations that took place at the Symposium on Reproductive Biology of Lizards at the Joint Meeting of Ichthyologists and Herpetologists held in Chattanooga, Tennessee in 2014. Although the majority of the authors are …


Wintering Bald Eagle Count Trends In The Conterminous United States, 1986-2010, Wade L. Eakle, Laura Bond, Mark R. Fuller, Richard A. Fischer, Karen Steenhof Sep 2015

Wintering Bald Eagle Count Trends In The Conterminous United States, 1986-2010, Wade L. Eakle, Laura Bond, Mark R. Fuller, Richard A. Fischer, Karen Steenhof

Biomedical Research Institute Publications and Presentations

We analyzed counts from the annual Midwinter Bald Eagle Survey to examine state, regional, and national trends in counts of wintering Bald Eagles (Haliaeetus leucocephalus) within the conterminous 48 United States from 1986 to 2010. Using hierarchical mixed model methods, we report trends in counts from 11 729 surveys along 844 routes in 44 states. Nationwide Bald Eagle counts increased 0.6% per yr over the 25-yr period, compared to an estimate of 1.9% per yr from 1986 to 2000. Trend estimates for Bald Eagles were significant (P ≤ 0.05) and positive in the northeastern and northwestern U.S. …


Draft Genome Sequences Of Six Different Staphylococcus Epidermidis Clones, Isolated Individually From Preterm Neonates Presenting With Sepsis At Edinburgh's Royal Infirmary, Paul Walsh, M. Bekaert, J. Carroll, T. Manning, B. Kelly, A. O'Driscoll, X. Lu, C. Smith, P. Dickinson, K. Templeton, P. Ghazal, Roy D. Sleator May 2015

Draft Genome Sequences Of Six Different Staphylococcus Epidermidis Clones, Isolated Individually From Preterm Neonates Presenting With Sepsis At Edinburgh's Royal Infirmary, Paul Walsh, M. Bekaert, J. Carroll, T. Manning, B. Kelly, A. O'Driscoll, X. Lu, C. Smith, P. Dickinson, K. Templeton, P. Ghazal, Roy D. Sleator

Department of Biological Sciences Publications

Herein, we report the draft genome sequences of six individual Staphylococcus epidermidis clones, cultivated from blood taken from different preterm neonatal sepsis patients at the Royal Infirmary, Edinburgh, Scotland, United Kingdom.