Two groups of shrimp are considered by scientists to be sympatric. Which must be true of these two groups?

Some barrier to reproduction exists between individuals of the two groups.
Food resources must be the same between the groups.
Neither group will show a change in change in gene frequency over time.
Neither group is subject to natural selection.
The two groups must mate at the same time of year.

Question

Two groups of shrimp are considered by scientists to be sympatric. Which must be true of these two groups?
 	
	Some barrier to reproduction exists between individuals of the two groups.
	Food resources must be the same between the groups.
	Neither group will show a change in change in gene frequency over time.
	Neither group is subject to natural selection.
	The two groups must mate at the same time of year.

aaronq · Answer

Because the 2 groups are confined to the same geographical area, they must have access to the same food resources.