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Download full textRyan, Amy B.; Elwess, Nancy L. – Bioscene: Journal of College Biology Teaching, 2017
This investigative laboratory activity engages students in observing, recording, graphing and analyzing pulsation rates in a commonly used laboratory organism, blackworms. This activity stresses how various drugs can impact the pulsation rate in blackworms at varying concentrations. In addition, we have incorporated two new ways to view the…
Descriptors: Science Instruction, Science Experiments, Science Activities, Science Laboratories
Direct linkPulver, Stefan R.; Hornstein, Nicholas J.; Land, Bruce L.; Johnson, Bruce R. – Advances in Physiology Education, 2011
Here we incorporate recent advances in "Drosophila" neurogenetics and "optogenetics" into neuroscience laboratory exercises. We used the light-activated ion channel channelrhodopsin-2 (ChR2) and tissue-specific genetic expression techniques to study the neural basis of behavior in "Drosophila" larvae. We designed and implemented exercises using…
Descriptors: Animal Behavior, Physiology, Genetics, Science Laboratories
Kalinowski, Steven T.; Leonard, Mary J.; Andrews, Tessa M. – CBE - Life Sciences Education, 2010
Natural selection is one of the most important concepts for biology students to understand, but students frequently have misconceptions regarding how natural selection operates. Many of these misconceptions, such as a belief in "Lamarckian" evolution, are based on a misunderstanding of inheritance. In this essay, we argue that evolution…
Descriptors: Genetics, Biology, Misconceptions, Evolution
