(a)[2]
What does the term genetic engineering mean?
(b(i))[2]
Outline the reasons why bacteria are useful in genetic engineering.
(b(ii))[2]
Identify the two processes. Put a tick (✓) in the box beside your answers.
(c(i))[2]
Explain why farmers use herbicides.
(c(ii))[2]
State the effect of the herbicide on the weeds and on the crop plants.