"selfish DNA" meaning in English

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      "expansion": "selfish DNA (uncountable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "A DNA sequence that spreads by forming additional copies of itself within the genome and makes no specific contribution to the reproductive success of its host organism."
      ],
      "hyponyms": [
        {
          "word": "transposon"
        },
        {
          "word": "homing endonuclease gene"
        },
        {
          "word": "supernumerary B chromosome"
        }
      ],
      "id": "en-selfish_DNA-en-noun-g8wsd-9a",
      "tags": [
        "uncountable"
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  ],
  "word": "selfish DNA"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "selfish DNA (uncountable)",
      "name": "en-noun"
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  ],
  "hyponyms": [
    {
      "word": "transposon"
    },
    {
      "word": "homing endonuclease gene"
    },
    {
      "word": "supernumerary B chromosome"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "A DNA sequence that spreads by forming additional copies of itself within the genome and makes no specific contribution to the reproductive success of its host organism."
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "selfish DNA"
}