Incomplete Dominance, Codominance, Polygenic Traits, and Epistasis!

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Discover more types of non-Mendelian inheritance such as incomplete dominance and codominance with the Amoeba Sisters! This video has a handout: This video uses vocabulary that was previously defined in the Amoeba Sisters Monohybrid Crosses video.

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The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky’s certification and experience in teaching biology at the high school level. For more information about The Amoeba Sisters, visit:

We cover the basics in biology concepts at the secondary level. If you are looking to discover more about biology and go into depth beyond these basics, our recommended reference is the FREE, peer reviewed, open source OpenStax biology textbook:

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  1. I'm studying high school biology final, and although these videos seem like they're aimed at 10 years olds, it never fails to make me laugh. (and learn!)

  2. Someone with accurate knowledge answer me only please.
    So incomp, comp and codom only apply in Non-Mendelian genetics?
    What are some of the hints in problems to let us know if something is Mendelian or Non-Mendelian?

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