Which example illustrates darwin's main contribution to the theory of evolution? an agricultural pest has been exposed to a pesticide that wipes out the entire species. in a laboratory, a scientist chooses the most intelligent mice and breeds them to advance the species. when exposed to antibiotics, most bacteria in a population die but some survive and live to reproduce. in the african savannah, a scientist observes that a wildebeest calf has inherited its coat pattern from its father.

The correct answer is when exposed to antibiotics, most bacteria in a population die but some survive and live to reproduce.

Explanation:

A bacterial population getting exposed to antibiotics because of which the majority of them dying, and only a few surviving and living to reproduce is an illustration of Darwin's theory of evolution.  

According to the theory, all the species of organisms originate and develop via the natural selection of small, inherited changes, which enhances the tendency of the species to survive, compete, and reproduce.  

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."