Summary
Highlights
Genetic engineering involves transferring a desirable gene from one organism to another, modifying the genome to introduce a new, helpful trait. This allows for the creation of genetically modified (GM) organisms, even across different species.
Genetic engineering has been used to create sheep that produce medicinal substances in their milk, bacteria that produce human insulin for diabetes treatment, and crops with improved size, quality, and resistance to diseases, insects, and herbicides. Gene therapy is also being researched to treat inherited disorders by introducing healthy genes, though widespread application is challenging.
GMO crops offer benefits like increased food production, improved nutritional content (e.g., golden rice for preventing blindness), and enhanced resistance. However, concerns include potential unknown health effects (though no evidence of harm exists yet) and the possibility of GM crops outcompeting wild plants and changing ecosystems, although this is considered unlikely for most crops.
The process of gene transfer involves isolating the desired gene using enzymes, inserting it into a vector (like a virus or bacterial plasmid), and then introducing this vector to the target organism. The organism's cells then take up the vector and the new gene, leading to the production of the desired protein.