Question 53

(Multiple Choice)

The next few questions refer to the following description.
On the Bahamian island of Andros,mosquitofish populations live in various,now-isolated,freshwater ponds that were once united.Currently,some predator-rich ponds have mosquitofish that can swim in short,fast bursts; other predator-poor ponds have mosquitofish that can swim continuously for a long time.When placed together in the same body of water,the two kinds of female mosquitofish exhibit exclusive breeding preferences.
-What is the best way to promote fusion between two related populations of mosquitofish,one of which lives in a predator-rich pond,and the other of which lives in a predator-poor pond?


A)Build a canal linking the two ponds that permits free movement of mosquitofish, but not of predators.
B)Transfer only female mosquitofish from a predator-rich pond to a predator-poor pond.
C)Perform a reciprocal transfer of females between predator-rich and predator-poor ponds.
D)Remove predators from a predator-rich pond and transfer them to a predator-poor pond.

Answer