Great Ideas: Object Lesson for Science

Have students who are confused about biology concepts? You might find this helpful.

In biology, I often find students confused about concepts of complete dominance, incomplete dominance, and codominance types of pattern of inheritance.

I use a simple analogy to help students understand these concepts. I ask them to match the type of inheritance pattern to one of the following scenarios:

  1. a red curtain made of thick fabric covering a white curtain behind it;
  2. a red curtain made of thick fabric with different size holes covering the white curtain; or
  3. a see-through red curtain covering the white curtain behind it.

Students not only pick up on the concept right away, but they retain it as well.

~ Submitted by Neena Goel, science instructor, Gilmour Academy, Gates Mills, Ohio

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