In a scientific investigation, the term “quantitative data” refers to numbers that are usually followed by

The correct answer are units.

Explanation:

In a scientific investigation, quantitative data signifies towards the numbers, which are usually succeeded by units. Exact quantities are used in quantitative data. The manner in which the researchers and scientists utilize a coordinated approach to answering the queries regarding the world surrounding us is known as a scientific investigation.

"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."