Title of Unit



Title of UnitGene Expression: A basic overviewDate and Location of SIAugust 5, 2013Stony BrookUnit Developers & Contact InformationKenneth van Golen, University of Delaware, klvg@udel.eduNike Olabisi, University of Delaware, nolabisi@udel.eduAmy Warenda Czura, Suffolk County Community College, czuraa@sunysuffolk.eduVladimir Jurukovski, Suffolk County Community College, jurukov@sunysuffolk.eduJacqueline Washington, Nyack College, jacqueline.washington@nyack.eduPeter Park, Nyack College, peter.park@nyack.eduContextIntroductory Biology (first course of a two semester series). The topic should be covered within one class week; 3 lecture hours.The unit will be taught in the middle of the course after introduction of chemistry, proteins and enzymes.Abstract(< 200 words)This topic represents a basic foundation for biology majors, which will be applied to multiple upper level courses. The students will gain a broader perspective on the relationship between DNA, RNA and protein. Specifically, the students will demonstrate knowledge of the structure of genes and the processes of transcription and translation both in prokaryotes and eukaryotes. In addition, at the conclusion of the unit the student should be able to outline the basic steps of the central dogma and argue its validity. The students should also be able to explain the cellular machinery required for transcription and translation in detail and apply the genetic code to translation. Finally, the students will apply their knowledge of the processes discussed in this unit to predict the outcome of mutations on protein structure and function.RationaleThe teaching unit applies to multiple introductory level biology courses. Biology students require a basic foundation of the process of gene expression. This unit clarifies the misconceptions of the definition of a gene and the relationships between DNA, RNA and proteins. Learning Goals: what students will know, understand, and be able to do; includes content knowledge, attitudes, & skills The students should be able to:Demonstrate knowledge of the relationships among DNA, genes, RNA and proteins.Know the detailed mechanisms of the processes of transcription and translation.Understand how genetic mutations impact protein function.Learning Outcomes: Student behaviors or performances that will indicate they have successfully accomplished the goalsThe students should be able to:Define and illustrate the basic structure of a gene.Outline the basic steps of the central dogma. Define and explain the process of transcription. Compare and contrast prokaryotic and eukaryotic transcription.Apply genetic code to translation.Define and explain the process of translation. Discuss the strengths and weaknesses of the central dogma and argue its validity.Describe the various types of genetic mutations.Predict the effect of mutations on protein structure and function. Incorporation of Scientific Teaching ThemesActive LearningAssessmentDiversity (Inclusion)How students will engage actively in learning the conceptsHow teachers will measure learning; how students will self-evaluate learningHow the unit is designed to include participants with a variety of experiences, abilities, and characteristicsActivities outside of class:Homework with high Blooms level questions. Homework would extend the activities performed in class. Activities in class:Clicker, Think-pair-share, writing assignments, class interaction and discussion.Activities during tidbit:Clickers, group discussion, writing assignment, worksheet, puzzle solving and question/answer. Reverse the activity-given amino acid sequence student will need to work backwards and determine DNA sequence.Pre-assessments:Clicker, quizzes and writing assignment Post-tidbit assessments:Clicker and writing assignments, homework.Inclusion of multiple learning activities to accommodate students with different backgrounds, learning styles and personalities. Sample Presentation Plan (general schedule with approximate timing for unit)Session 1Time (min)Learning Outcome(s)Activity/assessmentExplanation, notes, suggestions, tipsPreclass 2 hours Understanding details of transcription, translation, central dogma and genetic code. Clicker, quiz The students will be able to answer higher Bloom level questions about the central dogma by outlining the strengths and weakness of the central dogma, specifically giving exceptions to the rule. Enter approx. class time for learning activitypreparatorymaterial presentation20 minutes Enter approx. class time for learning activity #120 minDescribe the various types of genetic mutations.Predict the effect of mutations on protein structure and function. Clicker questions, writing assignment, Think-Pair-Share, Group discussion, homework, Reverse the activity-given amino acid sequence student will need to work backwards and determine possible DNA sequence. Structure of amino acids and the consequence of amino acid substitutions with varying biochemical and structural properties. The degenerative nature of the genetic code can also be included. Consider varying clicker activity by starting with coding (instead of template) strand of DNA. Enter approximate time for additional learning activities and associated classWork/preparatory materials15 minutes Develop rubric for homework assignment.The homework will be extended by having the students determine what the frequency of mutation in the human genome and which base position is more frequently altered. Enter approximate time for post-activity summing up or transition5 minutesAdd additional activities information as needed for the unit. Resources for Teaching the UnitClickers, handouts and worksheets, genetics concepts inventory and misconception of concepts. Bowling BV, Acra EE, Wang L, Myers MF, Dean GE, Markle GC, Moskalik CL, Huether CA. 2008. Innovations in teaching and learning genetics: Development and evaluation of a genetics literacy assessment instrument for undergraduates. Genetics 178,15-22.?Smith MK, Wood WB, Knight JK. 2008. The genetics concept assessment: A new concept inventory for gauging student understanding of genetics. The American Society for Cell Biology 7, 422-430. ??Bibliography – STCSE (Students' and Teachers' Conceptions and Science Education); compiled by Reinders Duit: of unit (if you have used it in your own teaching)AcknowledgementsRoss Nehm and Casey Roehrig ................
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