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Showing 91 to 105 of 123 results Save | Export
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Heil, Caiti S. S.; Manzano-Winkler, Brenda; Hunter, Mika J.; Noor, Juliet K. F.; Noor, Mohamed A. F. – American Biology Teacher, 2013
We present a laboratory exercise that leverages student interest in genetics to observe and understand evolution by natural selection. Students begin with white-eyed fruit fly populations, to which they introduce a single advantageous variant (one male with red eyes). The superior health and vision associated with having the red-eye-color allele…
Descriptors: Genetics, Evolution, Student Interests, Laboratories
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Forster, Mary – American Biology Teacher, 1974
Describes an experiment, easily repeated in the classroom, designed to determine whether members of the species Drosophila melanogaster show selective preference in choice of mates. (PEB)
Descriptors: Biology, Genetics, Heredity, Insects
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Haggerty, Hugh A. – American Biology Teacher, 1975
Describes a computer program used to simulate Drosophila breeding and reproduction. The format of the program involved is presented as a part of the article. (PEB)
Descriptors: Biology, Computer Programs, Computer Science, Genetics
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Brembs, Bjorn; Wiener, Jan – Learning & Memory, 2006
In a permanently changing environment, it is by no means an easy task to distinguish potentially important events from negligible ones. Yet, to survive, every animal has to continuously face that challenge. How does the brain accomplish this feat? Building on previous work in "Drosophila melanogaster" visual learning, we have developed an…
Descriptors: Memory, Methods, Cues, Visual Stimuli
Galewsky, Samuel – Bioscene, 2000
Introduces a series of molecular genetics laboratories where students pick a single colony from a Drosophila melanogester embryo cDNA library and purify the plasmid, then analyze the insert through restriction digests and gel electrophoresis. (Author/YDS)
Descriptors: Chemical Analysis, DNA, Genetics, Higher Education
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Diegelmann, Soeren; Zars, Melissa; Zars, Troy – Learning & Memory, 2006
Memories can have different strengths, largely dependent on the intensity of reinforcers encountered. The relationship between reinforcement and memory strength is evident in asymptotic memory curves, with the level of the asymptote related to the intensity of the reinforcer. Although this is likely a fundamental property of memory formation,…
Descriptors: Reinforcement, Models, Memory, Memorization
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Wollard, Laura; Klein, Benjamin; Carlson, Darby J.; Carlson, Kimberly A. – Bioscene: Journal of College Biology Teaching, 2006
A major challenge in teaching the process of science to students is designing and implementing laboratory activities that emulate what is actually done in a research laboratory. To facilitate this effort, science educators have been encouraged to design exercises that span multiple laboratory periods, encourage independent thinking, promote…
Descriptors: Majors (Students), Graduate Students, Research Projects, Distance Education
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Paranjpe, Pushkar; Rodrigues, Veronica; VijayRaghavan, K.; Ramaswami, Mani – Learning & Memory, 2012
In some situations, animals seem to ignore stimuli which in other contexts elicit a robust response. This attenuation in behavior, which enables animals to ignore a familiar, unreinforced stimulus, is called habituation. Despite the ubiquity of this phenomenon, it is generally poorly understood in terms of the underlying neural circuitry. Hungry…
Descriptors: Habituation, Inhibition, Entomology, Neurology
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Parker, Joel D.; Ziemba, Robert E.; Cahan, Sara Helms; Rissing, Steven W. – Biochemistry and Molecular Biology Education, 2004
This hypothesis-driven laboratory exercise teaches how DNA evidence can be used to investigate an organism's evolutionary history while providing practical modeling of the fundamental processes of gene transcription and translation. We used an inquiry-based approach to construct a laboratory around a nontrivial, open-ended evolutionary question…
Descriptors: Inquiry, Science Process Skills, Laboratory Experiments, Science Experiments
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Wallen, Ellen T. – American Biology Teacher, 1981
Describes a new apparatus for Drosophila habitats which has the advantage of leaving pupae and adult flies undisturbed while being able to renew or move the media and larvae at will. (CS)
Descriptors: Animal Facilities, Biology, College Science, Genetics
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Pratt, Carl R. – American Biology Teacher, 1994
Describes an experiment that uses the cobra lily (Darlingtonia californica) and fruit flies (Drosophila virilis) to investigate predator-prey relationships in a classroom laboratory. Suggestions for classroom extension of this experimental system are provided. (ZWH)
Descriptors: Ecology, Insects, Science Activities, Science Education
Olson, Steve – National Academies Press, 2004
As both individuals and societies, we are making decisions today that will have profound consequences for future generations. From preserving Earth's plants and animals to altering our use of fossil fuels, none of these decisions can be made wisely without a thorough understanding of life's history on our planet through biological evolution.…
Descriptors: Evolution, Science Instruction, Decision Making, Genetics
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Acevedo, Summer F.; Froudarakis, Emmanuil I.; Kanellopoulos, Alexandros; Skoulakis, Efthimios M. C. – Learning & Memory, 2007
Diminished responses to stimuli defined as habituation can serve as a gating mechanism for repetitive environmental cues with little predictive value and importance. We demonstrate that wild-type animals diminish their responses to electric shock stimuli with properties characteristic of short- and long-term habituation. We used spatially…
Descriptors: Habituation, Neurological Organization, Entomology
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Johnson, Ronald; Kennon, Tillman – Journal of College Science Teaching, 2009
Hypotheses of population genetics are derived and tested by students in the introductory genetics laboratory classroom as they explore the effects of biotic variables (physical traits of fruit flies) and abiotic variables (island size and distance) on fruit fly populations. In addition to this hypothesis-driven experiment, the development of…
Descriptors: Genetics, Introductory Courses, Science Instruction, College Science
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Mertens, Thomas R. – American Biology Teacher, 1983
Background information, laboratory procedures (including matings performed), and results are presented for an open-ended investigation using the fruitfly Drosophila melanogaster. Once data are collected, students develop hypotheses to explain results as well as devise additional experiments to test their hypotheses. Calculation of chi-square for…
Descriptors: Biology, Entomology, Genetics, High Schools
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