___________ is a technique in which genetic constitution of an organism is altered by introducing new genes into its chromosomes.
Genetic engineering
Genetic enginnering is the technique by which genetic constitution of an organism is altered by introducing new genes into its chromosomes. The organisms thus generated are called genetically modified organism (GMO). Genes for insulin was inserted into a bacteria to make them GMO capable of producing large amounts of insulin. Hence, insulin is the first product obtained from a GMO.