0 (the science of) changing the structure of the genes of a living thing in order to make it healthier, stronger, or more useful to humans --
1 the science of changing the structure of the genes (= specific chemical patterns) of a living thing, used esp. in developing new food products and in medicine --
2 the science of changing the structure of genes, used especially in developing new food products and in medicine --
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Vi kan slutföra det steg för steg hur lång vägen än är och den kan inte slutföras hur kort vägen än är om du inte ens markerar ditt fotavtryck.