d
The squirrel populations on either side of the river did not experience gene flow and became two different species.
Scientists observe a population of squirrels over a long period of time.
The scientists note that after the populations are able to live together, the black and the brown squirrels are not able to produce fertile offspring. Which explanation BEST supports the scientists' observation?
a
The squirrel population divided into a dominant population and a recessive population of one species.
b
The squirrel population experienced more mutations living together than living apart.
c
The squirrel populations did not have enough genetic variation to produce fertile offspring.
d
The squirrel populations on either side of the river did not experience gene flow and became two different species.
1 answer
1 answer