0 the process 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 process of scientifically changing the genes of plants and animals in order to create forms of them that are less likely to get diseases, will grow faster, etc.:
Several environmental groups object strongly to genetic modification, saying that it could have disatrous consequences that no-one can predict.
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.
