You can just take the DNA code from marijuana or poppies or coca leaves and cut and past that gene and put it into yeast, and you can take those yeast and make them make the cocaine for you, or the marijuana, or any other drug.
Basta con tomar el código genético de la marihuana o de las hojas de amapola o coca, copiar y pegar los genes, colocarlos en levadura, tomar esa levadura hacerla producir la cocaína o marihuana, o cualquier droga.