"Galton-Watson process" meaning in English

{
  "etymology_text": "Devised by Francis Galton and Henry William Watson and published in an 1874 paper.",
  "forms": [
    {
      "form": "Galton-Watson processes",
      "tags": [
        "plural"
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      "expansion": "Galton-Watson process (plural Galton-Watson processes)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "A branching stochastic process arising from the statistical investigation of the extinction of family names, which are modelled as patrilineal, while offspring are randomly either male or female, and names become extinct if holders die without male descendants. It is useful in understanding human Y-chromosome DNA haplogroups."
      ],
      "id": "en-Galton-Watson_process-en-noun-CBcxmwYf",
      "links": [
        [
          "stochastic",
          "stochastic"
        ],
        [
          "extinction",
          "extinction"
        ],
        [
          "family name",
          "family name"
        ],
        [
          "patrilineal",
          "patrilineal"
        ],
        [
          "offspring",
          "offspring"
        ],
        [
          "Y-chromosome",
          "Y chromosome"
        ],
        [
          "DNA",
          "DNA"
        ],
        [
          "haplogroup",
          "haplogroup"
        ]
      ],
      "wikipedia": [
        "Galton-Watson process"
      ]
    }
  ],
  "word": "Galton-Watson process"
}

{
  "etymology_text": "Devised by Francis Galton and Henry William Watson and published in an 1874 paper.",
  "forms": [
    {
      "form": "Galton-Watson processes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
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      "expansion": "Galton-Watson process (plural Galton-Watson processes)",
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "A branching stochastic process arising from the statistical investigation of the extinction of family names, which are modelled as patrilineal, while offspring are randomly either male or female, and names become extinct if holders die without male descendants. It is useful in understanding human Y-chromosome DNA haplogroups."
      ],
      "links": [
        [
          "stochastic",
          "stochastic"
        ],
        [
          "extinction",
          "extinction"
        ],
        [
          "family name",
          "family name"
        ],
        [
          "patrilineal",
          "patrilineal"
        ],
        [
          "offspring",
          "offspring"
        ],
        [
          "Y-chromosome",
          "Y chromosome"
        ],
        [
          "DNA",
          "DNA"
        ],
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          "haplogroup",
          "haplogroup"
        ]
      ],
      "wikipedia": [
        "Galton-Watson process"
      ]
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  ],
  "word": "Galton-Watson process"
}