MCQOPTIONS
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| 1. |
Populations are said to be allopatric when ________. |
| A. | they are physically isolated by natural barriers |
| B. | they live together and breed freely to produce viable offspring |
| C. | they are isolated but often come together for breeding |
| D. | None of the above |
| Answer» B. they live together and breed freely to produce viable offspring | |