Restriction enzymes are used in genetic engineering because they
A. Can join DNA fragment
B. Cut DNA at specific base sequence
C. Cut DNA at variable sites
D. Are proteolytic enzymes which degrade harmful proteins
Answer:B
Restriction enzymes are used in genetic engineering because they
A. Can join DNA fragment B. Cut DNA at specific base sequence C. Cut DNA at variable sites D. Are proteolytic enzymes which degrade harmful proteins