From cogbooks module 7.1: how could something as complex as the behavior of ant-parasitizing lomechusa (staphylinid beetles) have evolved?

these are beetles with special glands, behavior, and body-shape that trick ants into taking them into their nests. inside the ant-nest, these beetles act as parasites, feeding on ant brood and being fed by the ants.

a. these complex behaviors may have arisen gradually through natural selection.
b. complex structures and behaviors such as lomechusa beetles often appear suddenly in the natural world - with little natural precedent.
c. many lomechusa beetles already have pre-existing glands and behaviors that could potentially be co-opted and modified through time.
d. both a and c from

A. These complex behaviors may have arisen gradually through natural selection.

Explanation:

Lomechusa beetles have pre-existing glands and behaviors that can be easily co-opted and changed through time

segmentation=endoskeleton=backbone=coelom=tissues

"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."