3 Two populations of rodents prefer to live in different soil types in the same area. One soil type is light-colored and the
other soil type is dark-colored. There is no physical barrier between the two soil types. However, the rodents living in the
light soil only mate with one another, and the rodents living in the dark soil only mate with one another.
Which of the following will most likely happen to these rodent populations over time?
A:The populations will become two different species.
B :The populations will learn to live on top of the soil.
C:The population with the highest birth rate will move to the other soil type.
D:The populations will become more genetically similar to each other.