# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/joe-hin-tjio
# Generated: 2026-08-14T19:51:34.768Z

schema: https://schema.org/Person
url: "https://fame.am/person/joe-hin-tjio"
name: "Joe Hin Tjio"
slug: "joe-hin-tjio"
description: "Joe Hin Tjio, was an Indonesian-born American cytogeneticist. He was renowned as the first person to recognize that the normal number of human chromosomes is 23. He discovered this on 22 December 1955 at the Institute of Genetics of the University of Lund in Sweden, where he was a visiting scientist."
tagline: "Indonesian geneticist"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Joe_Hin_Tjio.jpg?width=1200"
gender: "male"
country:
  name: "Indonesia"
  isoCode: "ID"
birthDate: "1919-11-02"
deathDate: "2001-11-27"
livingStatus: "DECEASED"
scores:
  popularity:           49.99
  momentum:             10
  historical:           6.645797333333334
  currentAttention:     0
  sourceConfidence:     39.99999999999999
  profileCompleteness:  50
  trendDirection:       "STABLE"
ranks:
  global:   null
  country:  250
  category: null
sources:
  - url: "https://tr.wikipedia.org/wiki/Joe_Hin_Tjio"
    title: "Joe Hin Tjio"
    type:  "WIKIPEDIA"
  - url: "https://ca.wikipedia.org/wiki/Joe_Hin_Tjio"
    title: "Joe Hin Tjio"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Joe_Hin_Tjio"
    title: "Joe Hin Tjio"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Joe_Hin_Tjio"
    title: "Joe Hin Tjio"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Joe_Hin_Tjio"
    title: "Joe Hin Tjio"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Joe_Hin_Tjio"
    title: "Joe Hin Tjio"
    type:  "WIKIPEDIA"
  - url: "https://id.wikipedia.org/wiki/Tjio_Joe_Hin"
    title: "Tjio Joe Hin"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q1691467"
    title: "Wikidata"
    type:  "WIKIDATA"

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