Lactose tolerance is an exploitable weakness for a potential chink bioweapon.
>virus has Cas9, gRNA that guides it to the lactase gene, and template DNA for a toxic protein (say, ricin)
>virus infects chink
>nothing happens because they don't have that gene
>virus infects why peepoo
>lactase gene is replaced with ricin gene
>body produces ricin
>yt peepoo die
>virus has Cas9, gRNA that guides it to the lactase gene, and template DNA for a toxic protein (say, ricin)
>virus infects chink
>nothing happens because they don't have that gene
>virus infects why peepoo
>lactase gene is replaced with ricin gene
>body produces ricin
>yt peepoo die