This online module teaches about natural selection and how bacteria can influence …
This online module teaches about natural selection and how bacteria can influence natural selection (antibiotic resistance). Dr. Carl Bergstrom manages evolution. From his laboratory at the University of Washington, Carl figures out how to control the evolutionary future of microbe populations, nudging them towards particular destinies and away from others.
In their study of the medium ground finches, evolutionary biologists Peter and …
In their study of the medium ground finches, evolutionary biologists Peter and Rosemary Grant were able to track the evolution of beak size twice in an amazingly short period of time due to two major droughts that occurred in the 1970s and 1980s. This activity simulates the food availability during these droughts and demonstrates how rapidly natural selection can act when the environment changes. Students use two different types of tools to represent different beak types to see which is best adapted to collect and eat seeds of different sizes. Students collect and analyze data and draw conclusions about traits that offer a selective advantage under different environmental conditions. They have the option of using an Excel spreadsheet to calculate different descriptive statistics and interpret graphs.
In this lesson, students work in teams of two, and each team …
In this lesson, students work in teams of two, and each team completes two separate experiments demonstrating random genetic drift and natural selection.
This multimedia resource, part of the NC Science Now series, describes how …
This multimedia resource, part of the NC Science Now series, describes how researcher in Research Triangle Park are working to figure out what is causing the dramatic decline in the population of honey bees and how it is threatening the world's food supply. Components of this resource include a video, a related blog article, and discussion questions. Links to these components are provided on the page under the heading "UNC-TV Media."
This webpage provides resources, including a link to a video, to aid …
This webpage provides resources, including a link to a video, to aid student understanding of how the environment can influence the expression of genetic traits.
Giving us credit when you use our content and technology is not …
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In this advanced lesson, students use amino acids sequences from the rock …
In this advanced lesson, students use amino acids sequences from the rock pocket mouse genome to illustrate the different levels of protein structure and the relationship between a protein's structure and function.
In this unit, students will investigate the adaptations of honeybees and flowering …
In this unit, students will investigate the adaptations of honeybees and flowering plants to see how each are designed to ensure survival through the pollination process.
Biodiversity, a term first coined in 1980 by ecologist, E.O. Wilson, describes …
Biodiversity, a term first coined in 1980 by ecologist, E.O. Wilson, describes the variety of species, genetic variabilityamongst individuals within each species, the variety of ecosystems, and the function of energy and matter flow andcycling through a community. Biodiversity is a relative term, comparing one ecosystem to another, and can bemeasured through a variety of methods.In today’s lab, you will use the Shannon-Weiner Diversity Index to describe biodiversity in different areas along a trail,comparing the biodiversity at the trails edge versus the biodiversity of a less disturbed area, inside the habitat. Thediversity index (H) is measured on a scale from 0.0 (indicating no diversity) to 4.0 (indicating infinite diversity). Thisindex value (H) takes into consideration species richness and abundance.
In this lesson, students read accounts of recent gene therapy trials and …
In this lesson, students read accounts of recent gene therapy trials and consider the ethical implications in each and in continuing gene therapy trials as a whole. Using a bioethical decision-making model, students will state the ethical questions, list relevant facts, identify stakeholders, consider values and develop possible solutions to dilemmas that arise form gene therapy treatments.
In this tutorial students will learn the importance of biological classification and …
In this tutorial students will learn the importance of biological classification and how the process of biological classification changes over time. Students will also learn about current methods scientists use for classifying organisms and how to use a dichotomous key.
Students will observe that biological organization is a hierarchial system of classification …
Students will observe that biological organization is a hierarchial system of classification in which each successive level is more complex than the lower level, and each successive level has properties that did not exist before. Students will sequence the levels of organization and make a foldable that lists and describes the levels.
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