{
  Gene01 => { ColA => 5, ColB => 15 },
  Gene02 => { ColA => 4, ColB => 8 },
  Gene03 => { ColA => 25, ColB => 5 },
}
{
  Gene01 => { ColA => 12, ColC => 3 },
  Gene03 => { ColA => 5, ColC => 20 },
  Gene05 => { ColA => 22, ColC => 40 },
  Gene06 => { ColA => 88, ColC => 2 },
}
{
  Gene01 => [{ ColA => 5, ColB => 15 }, { ColA => 12, ColC => 3 }],
  Gene03 => [{ ColA => 25, ColB => 5 }, { ColA => 5, ColC => 20 }],
}