The imprinting center is found in the promoter region of a non-coding gene called SNRPN. Based on the differences in modifications between the two copies of chromosome 15 in imprinted cells, which of the following statements about SNRPN would be true? A. The maternal copy of SNRPN is more highly expressed than the paternal copy.
B. The paternal copy of SNRPN is more highly expressed than the maternal copy.
C. Both copies of SNRPN are highly expressed.
D. Both copies of SNRPN are silenced.

"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."

a- all cells come from pre-existing cells

make   gliitsh plesea   !