User:TomHaffie/sandbox

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Earlobes average about 2 cm long, and elongate slightly with age.[1] Although the "free" vs. "attached" appearance of earlobes is often presented as an example of a simple Mendelian trait in humans, several studies suggest that the story is not that simple.[2] [3] A quick survey of your friends will reveal that earlobes do not all fall neatly into either the "free" or the "attached" categories; there is a continuous range from one extreme to the other, suggesting the influence of several genes.

  1. ^ Azaria R, Adler N, Silfen R, Regev D, Hauben DJ (June 2003). "Morphometry of the adult human earlobe: a study of 547 subjects and clinical application". Plast. Reconstr. Surg. 111 (7): 2398–402, discussion 2403–4. doi:10.1097/01.PRS.0000060995.99380.DE. PMID 12794488.{{cite journal}}: CS1 maint: date and year (link) CS1 maint: multiple names: authors list (link)
  2. ^ Lai LY, Walsh RJ (1966). "Observations on ear lobe types". Acta Genet Stat Med. 16 (3): 250–7. doi:10.1159/000151971. PMID 5953713.
  3. ^ Dutta, P., Ganguly, P. (1965). "Further observations on ear lobe attachment". Acta Genet. Statist. Med. 15: 77–86. doi:10.1159/000151894. PMID 14277139.{{cite journal}}: CS1 maint: multiple names: authors list (link)