Answer:
All
Step-by-step explanation:
The study of molecular basis (study of protein and nucleic acid) of any biological activity through intervention of laboratory technology is termed as molecular biotechnology
There are several methods of molecular biotechnology such as -
a) DNA cloning
b) Bacterial transformation
c) Chromosome integration
d) DNA polymerase & synthesis
e) Molecular hybridization
f) Polymerase Chain Reaction (PCR)
g) Expression cloning
h) Gel electrophoresis
i) Macromolecule blotting and probing
j) Arrays
Etc.
Hence, all are methods of molecular biotechnology