Or aliens, to be correct. Today, we looked a little deeper into how traits are inherited and determined what the alien offspring would look like from two aliens with heterozygous genes. We learned that not all genes are inherited through simple dominant/recessive genes. Our aliens had some co-dominant genes, some incomplete dominance, and one sex-linked trait. We did another activity where coins represented the two different alleles possible for guinea pig hair color and found the predicted outcome and then looked at our results as a class after each person did the toss 10 times. We saw some interesting differences between each others results, and then how the group as a whole came pretty close to the expected outcome, but it wasn't exact. Hopefully everyone understands that we can't know exactly what the outcome will be, and that inheritance is complicated!
Videos: Incomplete Dominance, Codominance, Polygenic Traits, and Epistasis! by the Amoeba Sisters--this is the video we watched in class that goes into other modes of inheritance. The Future of Genetics--TedEd Are GMOs Good or Bad? Look into one of the controversies around genetic engineering. Articles/Books: Why do huskies have blue eyes? The Human Genome Project You can see which genes have been found on each chromosome. 5 Controversies of Modern Genetics Activities: Teach Genetics with Jelly Beans This is another fun activity to show how traits are passed from parent to child. DNA Profiling & CODIS: Who Robbed the Bank This requires a deeper understanding of the structure of DNA than we went into in class, but could be fun for anyone who is interested in learning more about this. Perform a Dihybrid Cross This website uses slideshows, animations, etc. . . to walk through various aspects of Mendelian Inheritance.
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May 2020
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