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Transcript
Why Study Genetics?* *or “What am I going to learn in this class?” Why study genetics? • The study of genetics has helped to unlock some of the mysteries of life and brings up the question of what it really means to be human. • We have learned more about: – Who we were – Who we are – Who we are becoming • The future of genetics has no end in sight, as the more we know, the more questions we have. Who We Were… • Genetic Analysis Reveals Complexity of Modern Human Origins; Scientific American March 2002 Kate Wong • Your Inner Fish; Neil Shubin • Molecular Clocks • Eugenics Who we are… • Everything that makes us who we are is influenced by our DNA and genes • Human Genome Project • Genetic Errors – Often get all the attention • Normal Gene Functioning – How our bodies work and allow us to do the things we do Fig. 21-5 Proteins Who We Are Becoming… • Societal impacts of our knowledge • Biotechnology/Bioethics • Genetic Testing • Genetic Manipulation • Agriculture/GMO’s • What does the future hold? The Study of Genetics • Molecular Genetics – Smallest scale—individual organism – DNA->RNA->Protein = traits • Transmission Genetics – Next level--generational – How genes are inherited • Population Genetics – Large scale—entire population – Natural selection favors certain traits, which means that certain genes are favored as well. Genetic Terminology • • • • • • • • • Define as many of these terms as you can based on what you already know about genetics. Gene Mutation Allele Dominant Recessive Phenotype Genotype Sex chromosome Autosome
