# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/hermann-henking
# Generated: 2026-08-13T07:26:59.922Z

schema: https://schema.org/Person
url: "https://fame.am/person/hermann-henking"
name: "Hermann Henking"
slug: "hermann-henking"
description: "Hermann Paul August Otto Henking was a German cytologist who discovered the X chromosome in 1890 or 1891. The work was the result of a study in Leipzig of the testicles of the firebug, during which Henking noticed that one chromosome did not take part in meiosis. He named this the X element because its strange behaviour made him unsure whether it was genuinely a chromosome. It was later named the X chromosome after American cytologist Clarence Erwin McClung established that it was not only a genuine chromosome but a sex-determining one, though McClung incorrectly guessed that it was the male-determining sex chromosome."
tagline: "German biologist (1858-1942)"
gender: "male"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1858-06-16"
deathDate: "1942-04-28"
livingStatus: "DECEASED"
scores:
  popularity:           38.43
  momentum:             0
  historical:           6.139417333333334
  currentAttention:     0
  sourceConfidence:     39.99999999999999
  profileCompleteness:  45
  trendDirection:       "FALLING"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://ur.wikipedia.org/wiki/%DB%81%D8%B1%D9%85%D9%86_%DB%81%DB%8C%D9%86%DA%A9%D9%86%DA%AF"
    title: "ہرمن ہینکنگ"
    type:  "WIKIPEDIA"
  - url: "https://arz.wikipedia.org/wiki/%D9%87%D9%8A%D8%B1%D9%85%D8%A7%D9%86_%D9%87%D9%8A%D9%86%D9%83%D9%8A%D9%86%D8%AC"
    title: "هيرمان هينكينج"
    type:  "WIKIPEDIA"
  - url: "https://bs.wikipedia.org/wiki/Hermann_Henking"
    title: "Hermann Henking"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Hermann_Henking"
    title: "Hermann Henking"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Hermann_Henking"
    title: "Hermann Henking"
    type:  "WIKIPEDIA"
  - url: "https://ru.wikipedia.org/wiki/%D0%A5%D0%B5%D0%BD%D0%BA%D0%B8%D0%BD%D0%B3%2C_%D0%93%D0%B5%D1%80%D0%BC%D0%B0%D0%BD"
    title: "Хенкинг, Герман"
    type:  "WIKIPEDIA"
  - url: "https://sv.wikipedia.org/wiki/Hermann_Henking"
    title: "Hermann Henking"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q100940"
    title: "Wikidata"
    type:  "WIKIDATA"

# bio (long form, separated for readability)
bio: |
  Imported from discovery source: wikidata-dump