The passion to discover and invent were never obsolete, thus the process of progression didn’t stop.
However, breeding, cross-breeding, in-breeding, have limitations, the process took tedious efforts and the traits were unknown, until the birth of the offspring. Like breeding was only possible among the animals of the same type. The difficult task was to breed two different animals like dog and fish to generate a new offspring, which contained the traits of both. Modern technology of DNA made the impossible into a probable task (Herring, 2006).
The term genetic engineering stands for the change in the natural genetic code done artificially by humans to produce the specific quality in other living being. It involves DNA technology, which influences natural organism’s genome with synthetic genes. The final result is a production or invention of artificial trait or cloning in the living being, according to the desired aim of the scientist.
Genetic engineering has empowered human beings to make changes in the living beings around. For example, a chicken with four legs and no wings, modification in goat’s DNA with spiders, which gave the silky essence in its milk. Induction of monkey genes in the mice and human genes in bacteria to prevent from different diseases, thus genetic engineering has enabled man to create modifications in already existing traits. This tampering with human biology is also a controversial topic for some.
Some people consider it as a blessing, when in 1999 a child with pitiable immune system received a genetic therapy and the results were successful.