Which is a disadvantage of using DNA technology?

a. edible vaccines

b. phytoremediation

c. herbicide tolerance

d. gene transfer to nontarget species

The correct answer is d.

This is the case for example when genetically modified crops are growing next to another similar crop, or wild relative and this way the genes are transfered to non-target species.

A disadvantge of using DNA teachnology is the 'gene transfer to nontarget the species.'