Database of nucleotids - weigths included
$id : int
$letter : string
$complement : string
$nature : string
$weight : float
getId() : int
setId(int $id) : void
getLetter() : string
setLetter(string $letter) : void
getComplement() : string
setComplement(string $complement) : void
getNature() : string
setNature(string $nature) : void
getWeight() : float
setWeight(float $weight) : void