In this module, we're going to lose the mice and go with a universally recognized icon, the smiley face. Our face will have two phenotypic characteristics: eyes and teeth.
To make it easy to remember, the "normal" characteristics will be the dominants and the variants will be the recessives:
When I show the eyes and mouth inside a face, that means you're seeing the entire phenotype --
- the "normal" face is coded by 4 different genotypes: EETT, EeTt, EeTT, and EETt, while
- the "least" normal face is only coded by eett
On the other hand, when I show just the eyes and mouth (no face), it means we're just looking at the genotype of a gamete -- i.e., either the mother's or the father's contribution to a baby smiley. For example, an EeTT mother could have 2 kinds of eggs:
Click below to see all the possible phenotypes and gametes:
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