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Reevaluation of the earlobe types in Koreans.

K E Kim1, W J Song1, D K Kim1

  • 1Department of Medical Genetics, Keimyung University School of Medicine, 1095, Dalgubeoldaero, Dalseo-Gu, Daegu 42601, Republic of Korea.

Homo : Internationale Zeitschrift Fur Die Vergleichende Forschung Am Menschen
|November 6, 2018
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Summary

This study found that attached earlobes are most common in young Koreans. Earlobe shape frequencies significantly differ between males and females, highlighting potential genetic influences.

Keywords:
Attached earlobeFree earlobeSex differences

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Area of Science:

  • Anthropology
  • Genetics
  • Human Biology

Background:

  • Earlobe shape is recognized for its genetic significance.
  • Understanding earlobe morphology variations is crucial in population genetics.

Purpose of the Study:

  • To analyze the frequencies of different earlobe shapes in the Korean population.
  • To investigate sex-based differences in earlobe morphology among Koreans.

Main Methods:

  • Data collected from 1000 Korean adults (500 males, 500 females) in Daegu Metropolitan City.
  • Participants were in their twenties.
  • Frequencies of obtuse, acute, and right-angled earlobes, as well as attached and free types, were recorded.

Main Results:

  • Obtuse angled earlobes (41.2%) were most common overall, followed by acute (38.8%) and right-angled (20.0%).
  • Acute angled earlobes were most frequent in males (43.0%), while obtuse angled earlobes were most frequent in females (45.2%).
  • Attached earlobes (61.2%) were more prevalent than free earlobes, particularly in females (65.4% vs. 57.0% in males).

Conclusions:

  • The attached earlobe type is the most common phenotype in the studied Korean population.
  • Significant sex-based differences exist in both earlobe angle and attachment type frequencies.
  • Further research is warranted to elucidate the genetic underpinnings of these observed earlobe variations in Koreans.