A researcher places dogs in a cage with metal bars on the floor. The dogs are randomly given electric shocks and can do nothing to prevent them or stop them. Later, the same dogs are placed in a cage where they can escape the shocks by jumping over a low hurdle. When the shocks are given, the dogs do not even try to escape. They just sit and cower. This is an example of .

they have sperm in my gf's mouth

explanation:

"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."

substitution is the answer in this case