The evolutionary mechanism of migration involves the contribution of the genetic inheritance of migrating individuals A. to only the genetic makeup of an existing population of the same species.
B. to only the genetic makeup of an existing population of a new species.
C. to the genetic makeup of only one generation of an existing population of the same species.
D. to the genetic makeup of an existing population of the same species and a new, different species.

not sure but try c two haploid cells

explanation:

they absorb it i think

not sure

you

"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."