Tapeworms

Tapeworms or cyclophyllid cestodes are many of the hundreds of types of parasites that infect any beingness that feeds. The worms are contagious and can infect simply by ingesting them. Tapeworms look at certain conditions in order for them to survive; they require warm and wet areas. Once they are ingested into an organisms digestive system the feed make the nutrients in which is interpreted by the organism and derive that organism of it nutrients.
Many chemicals book been introduced to control tapeworms. But because of natural resistance and selection, a clear percentage survives from this intoxication and builds a natural resistance, which is the passed down by means of DNA, to their offsprings.
Epronex is one of the many chemicals which have been introduced to control the parasites. later a period of time, natural selection made an resistance to the species and the species reproduced, having the offspring to be immune to this chemical. The tapeworm underwent a trade in the environment which happens to be a chemical/ biologic change.



The chemical killed only 98% of the parasite which left field 2% of the infected population to have a natural resistivity to the chemical. This population reproduced leaving offspring to become stronger and immune to this chemical.
This left a problem to scientists as they had to research a radical chemical in order to kill off these resistant parasites. Darwins theory shows that we can never, 100% kill off a parasite or virus because of natural resistance. A change occurred within the specie where the 2% of the population that survived had true the antibodies needed in order to survive. These antibodies are what gave the species its natural immunity.If you destiny to get a full essay, order it on our website: Orderessay



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