Answer:
all organisms share a common genetic code
Step-by-step explanation:
Bacteria has been genetically modified to produce human insulin protein via genetic recombination. The gene coding for human protein is inserted in bacterial plasmid and then returned back to the bacteria. This arrangement allows faster and inexpensive way of insulin production.
Human insulin gene can be inserted into bacterial DNA because in the end all the organisms share a common genetic code. Genetic code is used by all organisms for gene expression forming the resultant protein. It is dependent on the information carried by the nucleotide triplets which finally get translated. Genetic code is universal which means the triplets will always code for the same amino acid no matter the organism hence bacteria can be used to produce a human protein if the gene can be made available to it.