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Lottie Peppers

The Perilous Plight of the Pika - National Center for Case Study Teaching in Science - 0 views

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    This interrupted case study addresses several concepts related to climate change and its effect on the American pika. Often called an indicator species for climate change, the pika has a unique set of variables specific to its environment. Factors such as temperature, snowpack, and vegetation can affect the distribution and ultimately the chances of survival. The case was designed for use in a "flipped" classroom in which students prepare in advance outside of class by filling out a worksheet while watching a video. The video, created by the author of the case, provides students with baseline information that they apply in class to come up with key ideas and predictions, followed by analysis of actual data to test the hypotheses they develop. The case study incorporates group discussion, analysis of experimental design, and data evaluation as central activities and can be taught in a single 50 minute class session. The case was designed for use in a large introductory-level class, but is also appropriate for smaller classes.
Lottie Peppers

GapMinder Data - 0 views

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    comprehensive data repository and analysis tools with many data sources to graph and investigate
Lottie Peppers

North American Pollen | Help - Science Pipes - 0 views

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    Data Analysis from The Cornell Lab-Basics of Science Pipes By Yoomee Kim, Lisa Adler-Golden, and Andrea McMillen (ESA) Science pipes works by clicking and dragging the data, operations, and desired output boxes to the workspace. You create a pipeline by drawing lines between the boxes.  Activities include: Cemetery Demography, Darwin's Finches, Forest Population Structure and North American Pollen
Lottie Peppers

Killing Chloroplasts - National Center for Case Study Teaching in Science - 0 views

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    This case study takes place at a fictional biotechnology company developing herbicides against invasive plant species. The case study focuses on five herbicides with different effects on photosynthesis. Students play the role of lab interns and explore photosynthesis and the herbicide effects by engaging in concept mapping, experimental design, data manipulation, and data analysis. The goal is to use the experimental data to predict the steps in photosynthesis that are inhibited by each herbicide. Students should come away from the case study with a process-based understanding of photosynthesis. This case study is designed for the "flipped" classroom with suggested preparatory videos and associated assessment questions included. Videos can be supplemented with textbook readings or mini-lectures. This activity was developed for a non-majors introductory biology course but it could also be used in any general biology course, including majors' courses. It might also be used to establish foundational knowledge for more advanced discussions of photosynthesis in plant biology (botany) courses.
Lottie Peppers

Analysis of more than 50,000 genomes hints at new disease-causing genes | Science | AAAS - 0 views

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    In the largest study of its kind, a research team has meshed extensive genome data on more than 50,000 people with their electronic health records and identified potential new disease-causing genes. The data further suggest that about one in 250 people may harbor a gene variant that puts them at risk for heart attacks and strokes, yet aren't receiving adequate treatment.
Lottie Peppers

Lizard Evolution Virtual Lab | HHMI's BioInteractive - 1 views

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    The virtual lab includes four modules that investigate different concepts in evolutionary biology, including adaptation, convergent evolution, phylogenetic analysis, reproductive isolation, and speciation. Each module involves data collection, calculations, analysis and answering questions. The "Educators" tab includes lists of key concepts and learning objectives and detailed suggestions for incorporating the lab in your instruction.
Lottie Peppers

A phylogenomic data-driven exploration of viral origins and evolution | Science Advances - 1 views

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    The origin of viruses remains mysterious because of their diverse and patchy molecular and functional makeup. Although numerous hypotheses have attempted to explain viral origins, none is backed by substantive data. We take full advantage of the wealth of available protein structural and functional data to explore the evolution of the proteomic makeup of thousands of cells and viruses. Despite the extremely reduced nature of viral proteomes, we established an ancient origin of the "viral supergroup" and the existence of widespread episodes of horizontal transfer of genetic information. Viruses harboring different replicon types and infecting distantly related hosts shared many metabolic and informational protein structural domains of ancient origin that were also widespread in cellular proteomes. Phylogenomic analysis uncovered a universal tree of life and revealed that modern viruses reduced from multiple ancient cells that harbored segmented RNA genomes and coexisted with the ancestors of modern cells. The model for the origin and evolution of viruses and cells is backed by strong genomic and structural evidence and can be reconciled with existing models of viral evolution if one considers viruses to have originated from ancient cells and not from modern counterparts.
Lottie Peppers

Desperate Times Call for Desperate Measures - National Center for Case Study Teaching i... - 0 views

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    This interrupted case study introduces the topic of bacterial sporulation and cannibalism in Bacillus subtilis. The storyline follows Susan and her lab mates who are presenting research at a lab meeting when Susan falls asleep and dreams they are stranded on a deserted island. She makes connections between their fight for survival in the dream and the survival mechanisms of the bacteria they study in the lab. The benefits of sporulation under conditions of sustained stress are fairly obvious, but Susan's dream is used to examine the idea that sporulation may not always be beneficial and that bacteria would not want to commit to entering such a state in response to temporary stresses. Through the analysis of actual data from the scientific literature, students uncover a mechanism by which B. subtilis delays its commitment to sporulation by killing members of its own species to release nutrients (i.e., cannibalism). Originally developed for a general undergraduate microbiology course when discussing the structure and growth of prokaryotic cells, the case could also be used in an introductory biology course that emphasizes bacteria and data literacy.
Lottie Peppers

Introducing | DNA to Darwin - 0 views

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    DNA to Darwin allows 16-19 year-old school students to explore the molecular evidence for evolution through practical bioinformatics activities that use data analysis tools and molecular data. Each of the activities on this web site centres around an engaging story from recent research in molecular genetics encompassing microbiology, plant and animal biology and human evolution.
Lottie Peppers

How Many More Thymes? A Case of Phytochemical Defense - National Center for Case Study ... - 1 views

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    This clicker case addresses several concepts related to the evolutionary ecology of herbivore defenses. A survey of several different studies that investigated chemical defenses in Thymus vulgaris (thyme) gives students the opportunity to develop hypotheses, pose potential experiments, and interpret data to develop a better understanding of not only herbivore deterrence, but also how natural selection can involve different pressures selecting for different phenotypes. The case study incorporates group discussion, analysis of experimental design, and data evaluation as central activities. It can be taught in a single 50-minute class session, an economy that is achieved in part by using a "flipped" approach. Students prepare outside of class by watching several short videos (one of which was made by the author) that teach the basics of herbivore deterrence and abiotic and biotic forces in the environment that can influence plant adaptations. The case study was designed for use in a large introductory-level class, but would also be appropriate for smaller classes or upper-level evolution courses.
Lottie Peppers

The Underrepresentation Curriculum Project - A flexible curriculum designed to help stu... - 0 views

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    The Underrepresentation Curriculum (URC) is a free, flexible curriculum for STEM instructors to teach about injustice and change the culture of STEM. Using tools such as data analysis, hypothesis creation, and investigation, students look critically at science through the lenses of equity and inclusion. By comparing the general population to similar data describing scientists, students can explore issues of social justice in STEM.
Lottie Peppers

Essential Statistics in Biology: Getting the Numbers Right | Bioinformatics.ca - 0 views

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    Exploratory data analysis and common statistical assumptions in biology
Lottie Peppers

Color Variation Over Time in Rock Pocket Mouse Populations | HHMI's BioInteractive - 0 views

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    A data collection and analysis lesson that examines selection for coat color in pocket mouse populations on different color substrates over time.
Lottie Peppers

Exome Study Reveals Novel Disease-Linked Alleles | The Scientist Magazine® - 0 views

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    In a unique twist on human genomics studies that seek to identify genetic variants linked to human disease, researchers have combined whole-exome sequencing of 50,726 adults with the individuals' long-term electronic health record (EHR) data. The effort, by researchers at the Geisinger Health System in Pennsylvania and Regeneron Genetics Center, a subsidiary of New York-based Regeneron Pharmaceuticals, has yielded novel disease-linked variants, including loss-of-function alleles. The team behind the project, called DiscovEHR, has also found that about one in 30 of the individuals harbors a deleterious genetic variant for which a screen or treatment already exists. The group's analysis is described in two papers published today (December 22) in Science.
Lottie Peppers

Analysis - Pediatric Cancer Genome Project | Explore - 0 views

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    Data visualization tool for pediatric cancer samples from patients.
Lottie Peppers

Ocean Life Faces Mass Extinction, Broad Study Says - NYTimes.com - 0 views

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    A team of scientists, in a groundbreaking analysis of data from hundreds of sources, has concluded that humans are on the verge of causing unprecedented damage to the oceans and the animals living in them. "We may be sitting on a precipice of a major extinction event," said Douglas J. McCauley, an ecologist at the University of California, Santa Barbara, and an author of the new research, which was published on Thursday in the journal Science.
Lottie Peppers

GSA PREP Resource: Cystic Fibrosis: Exploration of evolutionary explanations | Genetics... - 0 views

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    his resource describes an inquiry-based, in-class exercise designed for students working in small groups. It is designed to review and enrich student understanding of probability, how probabilities of individual events can be combined to make predictions about more complex outcomes, and how observed data can be compared to a null model based on probabilities using a chi-squared test. These skills are used extensively for classical genetic analysis. Throughout the activity, peers and instructors guide students through the process of developing and solving problems using probabilities and chi-squared tests in small groups.
Lottie Peppers

World population growth is expected to nearly stop by 2100 | Pew Research Center - 0 views

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    For the first time in modern history, the world's population is expected to virtually stop growing by the end of this century, due in large part to falling global fertility rates, according to a Pew Research Center analysis of new data from the United Nations. By 2100, the world's population is projected to reach approximately 10.9 billion, with annual growth of less than 0.1% - a steep decline from the current rate. Between 1950 and today, the world's population grew between 1% and 2% each year, with the number of people rising from 2.5 billion to more than 7.7 billion.
Lottie Peppers

The Habitable Planet - Ecology Lab - Overview - 0 views

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    Data rich simulation where students adjust parameters and run simulator for 100 iterations and see how 1) two plant species compete for a niche or 2) how composition of a food web changes over time Links to online textbook, videos, visuals, scientists.
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