• A sequence of DNA encoding a protein structure that binds to specific parts of DNA and affects transcription of DNA into RNA.
  • A short <xref>sequence</xref> of <xref>DNA</xref> that is shared by several <xref>genes</xref> involved in the <xref>morphogenesis</xref> of many <xref>organisms</xref>.
  • one of various similar homeotic genes that are involved in bodily segmentation during embryonic development
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