"A researcher claims that the Makira Island and the Santa Ana Island flycatchers are diverging into different species. Identify TWO potential prezygotic barriers that may be contributing to the divergence and speciation of these two populations of birds. Identify ONE piece of evidence that would indicate that speciation has already occurred within the flycatcher populations."

Explanation:

Two potential prezygotic barriers that may be contributing to the divergence and speciation of these two populations of flycatchers are behavioral isolation and habitat isolation

Evidence that would indicate that speciation has already occurred within the flycatcher populations is geographic patterns which resulted into allopatric speciation

really dont know just need some points

"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."