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Which of the following is Furuhata's index ?

  • A.\(\frac{\text{Whorls}}{\text{Loops}} \times 100\)
  • B.\(\frac{\text{Arches}}{\text{Whorls}} \times 100\)
  • C.\(\frac{2[\text{Whorls}] + \text{Loops}}{N}\)
  • D.None of the above

Answer: A

Furuhata's index is whorls divided by loops, multiplied by 100.

In dermatoglyphics, Furuhata's index expresses the ratio of whorls to loops on the fingertips as a percentage, and it is used to compare populations.

Arches divided by whorls, multiplied by 100, is the Dankmeijer index, a different ratio. Two times whorls plus loops divided by N, the number of digits, is the pattern intensity index. So only the first option is Furuhata's index.

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