ERIC Number: EJ1003662
Record Type: Journal
Publication Date: 2013-Feb
Abstractor: As Provided
Reference Count: 0
Witnessing Evolution First Hand: A K-12 Laboratory Exercise in Genetics & Evolution Using "Drosophila"
Heil, Caiti S. S.; Manzano-Winkler, Brenda; Hunter, Mika J.; Noor, Juliet K. F.; Noor, Mohamed A. F.
American Biology Teacher, v75 n2 p116-119 Feb 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 confers a fitness advantage, and the students can watch the spread of the allele within the population. The increasing numbers of red-eyed flies they observe over generations demonstrate evolution by natural selection. The students concurrently learn genetic principles, including basic inheritance and X-linkage.
Descriptors: Genetics, Evolution, Student Interests, Laboratories, Elementary Secondary Education, Laboratory Experiments, Scientific Principles, Animals, Elementary School Students, High School Students
University of California Press. 2000 Center Street Suite 303, Berkeley, CA 94704. Tel: 510-643-7154; Fax: 510-642-9917; e-mail: firstname.lastname@example.org; Web site: http://www.ucpressjournals.com/journal.php?j=abt
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Elementary Secondary Education
Authoring Institution: N/A