Roaches Change Body Chemistry To Survive; How They Do It May Hold Key To Malaria Spread

Wily Cockroaches Find Another Survival Trick:  Laying Off The Sweets by James Gorman.  The New York Times.  May 23, 2013.

(1)  Some populations of cockroaches have _________________ so that substance used to attract them to poisons,  the sweet -tasting ______________, tastes bitter.

(2)  This avoidance of glucose was __________, not _________.

(3)  What are two theories of the genetic mutation that occurred?

(4)  What significance could this research have for the spread of malaria?