ダーウィン結節
WordNet
- a swelling that is the characteristic lesion of tuberculosis
- of or relating to Charles Darwins theory of organic evolution; "Darwinian theories"
- an advocate of Darwinism
PrepTutorEJDIC
- 小塊茎,塊根 / 瘤状突起,結節
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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/10/22 21:48:24」(JST)
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Left: Darwin's tubercle. Right: the homologous point in a macaque.
Darwin's tubercle is a congenital ear condition which often presents as a thickening on the helix at the junction of the upper and middle thirds. The feature is present in approximately 10.4% of the population.[1] This acuminate nodule represents the point of the mammalian ear.
This atavistic feature is so called because its description was first published by Charles Darwin in the opening pages of The Descent of Man, as evidence of a vestigial feature indicating common ancestry among primates. However, Darwin himself named it the Woolnerian tip, after Thomas Woolner, a British sculptor who had depicted it in one of his sculptures and had first theorised that it was an atavistic feature.
The gene for Darwin's tubercle is inherited in an autosomal dominant pattern, and has incomplete penetrance, meaning that those who possess the gene will not necessarily present with the phenotype.[2]
See also
References
- ^ Ruiz, A. (1986). "An anthropometric study of the ear in an adult population". International Journal of Anthropology 1 (2): 135–43. doi:10.1007/BF02447350.
- ^ Spinney, Laura (2008). "Vestigial organs: Remnants of evolution". New Scientist 198 (2656): 42. doi:10.1016/S0262-4079(08)61231-2.
External links
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Japanese Journal
- 田村 端
- 人類學雜誌 78(4), 267-273, 1970
- 耳介外形は強い遺伝性を示し種の判定基準として有効である.また,同一種の各地域群の間で,どのような変異を示すかという問題は集団遺伝学的にも興味あることである.しかしながら,この種の研究はほとんど行われていない.このような観点から37体のカニクイザルを使用し,耳介型の分類基準を設定し,フィリピン,タイ,マラヤ各地域群を比較し地域的変異性の分析を試みた.分類にあたっては1.上耳介縁の特徴,2.結節の型, …
- NAID 130003726872
- 椿 宏治
- 人類學雜誌 66(2), 65-76, 1957
- … g. Darwinian tubercle, development of the helix, shapes of the tragus and the antitragus, etc. …
- NAID 130003726755
Related Links
- Darwinian tubercle n. A small projection from the upper end of free margin of the helix of the ear. Also called auricular tubercle.
- au·ric·u·lar tu·ber·cle [TA] a small inconstant projection from the upper end of the posterior portion of the incurved free margin of the helix of the auricle. Synonym(s): tuberculum auriculae [TA], darwinian tubercle, tuberculum superius
★リンクテーブル★
[★]
- 英
- Darwin's tubercle, darwinian tubercle
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結節
- 関
- node、nodose、nodulate、tubercular、tuberosity
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- 関
- Darwinism