BIOL110s05-26 - BIOL 110 Principles of Biology Spring 2005...

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1 BIOL 110 : Principles of Biology Spring 2005 Lecture 26, M 4/4/05 http://www.smccd.net/accounts/staplesn/biol110/ ONLINE Quizzes (bi-weekly) from now on! Link TO QUIZZES: (Cañada College I.D. [G#] for login and password) http://smcwebtest.smccd.net/accounts/staplesn/index.tpx Time-limited (so study well first!); ~ 30 minutes to complete Can view twice, submit once only. Midterm 2 was Returned Friday. Extra credit if scored <70%: Thoroughly rewrite answers to all missed questions; “Why the correct answer is right, why your answer was incorrect.” Due Mon. 4/11!! Journal Reports #1 Were due Friday!! (-5% each day after today!) REVIEW: Ch. 10: From DNA to Proteins – How does Genotype become Phenotype? • “Gene Expression” = transcription, translation – Mutations – types and severity (single nucleotide; frameshifts) TODAY: Ch. 11: Studying and Manipulating Genomes – Recombinant DNA technology • Cutting and Splicing; DNA carriers (“VECTORS”) • Amplifying DNA • Cloning & Gene Libraries – Genetic engineering: bacteria, Plants, Animals
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2 Golden Rice? or Frankenfood? • European scientists have inserted foreign genes into rice • Resulting rice may help prevent vitamin A deficiencies • Opponents worry about the unforeseen consequences of creating genetically modified organisms Genetic Changes • Humans have been changing the genetics of other species for thousands of years – Artificial selection of plants and animals – Dogs, Palm trees (dates), other fruits, flowers, cattle, etc. • Natural processes also at work – Mutation, crossing over
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3 I. Genetic Engineering • Genes are isolated ( “cloned ), modified, and inserted into an organism • Made possible by Recombinant DNA Technology –Cut DNA up and recombine pieces
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BIOL110s05-26 - BIOL 110 Principles of Biology Spring 2005...

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