Dolphins produce a variety of vocalizations, usually in the form of clicks and whistles. Dolphins are sometimes hunted in places like Japan, in an activity known as dolphin drive hunting. Besides drive hunting, they also face threats from bycatch, habitat loss, and marine pollution.
The DNA sequence of a gene can be altered in a number of ways. Gene mutations have varying effects on health, depending on where they occur and whether they alter the function of essential proteins. The types of mutations include:his type of mutation is a change in one DNA base pair that results in the substitution of one amino acid for another in the protein made by a gene.
A genetically modified (GM) food or genetically modified organism (GMO) results from the use of recombinant DNA biotechnological procedures that allow the genetic makeup of a food or organism to be altered in some way.ard cheeses provide another example of the use of genetically modified organisms in food production. Chymosin, the primary component of rennet, is the milk-clotting enzyme used to make cheese and other dairy products.