What is a "Nucleus"? the structure that forms the surface of a cell separating its contents from the
outside world
an organelle of some eukaryotic cells in which photosynthesis occurs, using the
energy of light to make organic compounds from carbon dioxide and water
a cell organelle that is essential to cell functions including reproduction, contains
the cell's chromosomes, and is enclosed by a membrane
membrane-bound organelles in eukaryotic cells in which cellular respiration
takes place, using oxygen to break down glucose to carbon dioxide and water
and putting the energy into a more readily usable form in ATP molecule

what's the question?

"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."