"overdominance" meaning in English

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      "expansion": "over- + dominance",
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  "etymology_text": "over- + dominance",
  "head_templates": [
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      "expansion": "overdominance (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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    {
      "_dis1": "0 0",
      "word": "dominance"
    }
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  "senses": [
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          "kind": "topical",
          "langcode": "en",
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          "orig": "en:Genetics",
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          "name": "English terms prefixed with over-",
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      "glosses": [
        "The case in which a heterozygote has a higher fitness or more extreme phenotype than either homozygote."
      ],
      "id": "en-overdominance-en-noun-U2gERQEY",
      "links": [
        [
          "genetics",
          "genetics"
        ],
        [
          "heterozygote",
          "heterozygote"
        ],
        [
          "homozygote",
          "homozygote"
        ]
      ],
      "raw_glosses": [
        "(genetics) The case in which a heterozygote has a higher fitness or more extreme phenotype than either homozygote."
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "biology",
        "genetics",
        "medicine",
        "natural-sciences",
        "sciences"
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    },
    {
      "glosses": [
        "Excessive dominance."
      ],
      "id": "en-overdominance-en-noun-B5DBs-cQ",
      "links": [
        [
          "Excessive",
          "excessive"
        ],
        [
          "dominance",
          "dominance"
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      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "overdominance"
}

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    "English terms prefixed with over-",
    "English uncountable nouns"
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  ],
  "etymology_text": "over- + dominance",
  "head_templates": [
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      "expansion": "overdominance (uncountable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "dominance"
    }
  ],
  "senses": [
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      "categories": [
        "en:Genetics"
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      "glosses": [
        "The case in which a heterozygote has a higher fitness or more extreme phenotype than either homozygote."
      ],
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          "genetics",
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          "heterozygote",
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        "(genetics) The case in which a heterozygote has a higher fitness or more extreme phenotype than either homozygote."
      ],
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        "uncountable"
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      "topics": [
        "biology",
        "genetics",
        "medicine",
        "natural-sciences",
        "sciences"
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    },
    {
      "glosses": [
        "Excessive dominance."
      ],
      "links": [
        [
          "Excessive",
          "excessive"
        ],
        [
          "dominance",
          "dominance"
        ]
      ],
      "tags": [
        "uncountable"
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  "word": "overdominance"
}