1)benefits of biotechnology are as follows:
- benefits in DNA analysis in crime issues
 
- helps in studying genetic disorder of the fetus
 
- high yielding crop production
 
- improved quality of food products
 
- increased food production
 
- helps in the production of antibiotics and vaccines
 
- improves human health
 
- improves well being of consumers and farm communities
 
- helps in maintaining environmental sustainability
 
- increased farmer income
 
- effective treatment of human diseases by the introduction of
pharmaceutical and diagnostic products
 
2)gene expression is the process by which inheritable
information from a gene such as the DNA sequence is made into a
functional gene product in the form of protein or RNA .
this is done with the help of biotechnology
this is done by fusion of bacterial gene to the E coli which is
extremely useful for determining the expression of gene product. E
coli is considered as the vector.
organisms containing introduced genes are called as
transgenic.
steps involved are:
- intoduction of gene of interest into the E coli which is
considered as the vector
 
- vector introduced into the transgenic bacteria
 
- transgenic bacteria used as a machinary for the production of
desired protein
 
- production of proteins in the bacteria by the process of
replication, transcription and translation
 
- isolation of proteins produced from the bacteria for commercial
use eg: insulin,growth hormone etc