Cloning is bad because
It is bad for animals
It can cause defects
It can cause possible radiation.
Genetic enginering is bad because
It can cause cancer
It can cause antibiotic resistance
It can produce new toxins
Artificial selection is bad because
There can be unanticipated consequences of encouraging a specific trait.
It lessens the amount of variation that exists in a gene pool.
The quality of life is often reduced through artificial selection.