DNA technology is useful in the identification of pathogens

DNA technology is useful in the identification of

pathogens that are unable to be grown readily on artificial lab media.

pathogens that are no longer alive in the patient sample,

species that cannot be differentiated by conventional testing.

All of the above.

Solution

DNA technology is useful in the identification of:

Pathogens that are unable to be grown readily on artificial lab media

Pathogens that are no longer alive in the patient sample, species that cannot be differentiated by conventional testing.

All are true as DNA technology is based on genes study which can be done in all these cases thus the option:

All of the above is correct