During this first lab students learned the basics of building pedigrees to study human genetics. Pedigrees were built for the following traits
- Free or attached ear lobe
- Hitchhiker's thumb
- Tongue rolling
- Hand folding
The latter two are behavioral traits with a genetic component but they seem to be inherited in a Mendelian fashion; they were suitable for this basic exercise. Each student surveyed such traits in their immediate family in order to perform the analyses.
Then we performed a couple of simulations (gametogenesis and fertilziation) to illustrate the Mendelian principles of segregation and independent assortment.
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