Unit 2 - How to Screen What is In Your Genes
During this unit students will examine the available types of genetic testing and screening and discuss ethical implications of these tests. Students will focus on prenatal testing, newborn testing, and carrier screening; however, the use of genetic testing to screen for disease risk will also be addressed. Playing the part of genetic counselors, students will analyze a patient case concerning issues of genetic testing and provide appropriate recommendations. Next, students will explore molecular techniques necessary to complete a genetic test, by amplifying a DNA segment using a polymerase chain reaction (PCR). They will then have a chance to see the connection between phenotype and genotype as they test their own genes. They will use the tools of molecular biology to extract their own DNA, amplify a part of the gene for bitter-tasting ability, identify their own gene sequence by restriction digest, and view their resultant genotype using gel electrophoresis.