Traits Previously Believed To Be Mendelian
Some traits were previously believed to be Mendelian, but their inheritance is (probably) based on more complex genetic models, possibly involving more than one gene. These include :
- Eye color
- Hair color
- Morton's toe
- Tongue rolling
- Widow's peak (allele)
- Detached (dominant) or attached (recessive) earlobes
- Hitchhiker's thumb (recessive)
Read more about this topic: List Of Mendelian Traits In Humans
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—Myriam Miedzian, U.S. author. Boys Will Be Boys, ch. 1 (1991)
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