Whole genes and parts of genes can be extracted from chromosomes, linked to other DNA molecules to form recombinant DNA and introduced into living cells. In a process known as gene cloning, the host cell's biochemical processes are used to make many copies of the inserted gene and the protein it codes for.
converting food into smaller molecules
They should be limited to suit your needs not overdoing it or underdoing just to a healthy weight.
Physical ......................................................