Two Unifactorial Characters for which Man is Polymorphic

@article{Allison1956TwoUC,
  title={Two Unifactorial Characters for which Man is Polymorphic},
  author={A. Allison and K. Mcwhirter},
  journal={Nature},
  year={1956},
  volume={178},
  pages={748-749}
}
IT has been recognized for many years that humans excrete methanethiol (methyl mercaptan) after eating asparagus, and it has been assumed that this character is universal1,2. We have found, however, that while some subjects excrete detectable amounts of methanethiol after ingesting only three or four sticks of asparagus, no significant amount of the compound appears in the urine of others after ingestion of as much as a pound of asparagus. Biochemical investigations of this metabolic difference… Expand
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