| 31. | As such it can and does freely interbreed with populations of red jungle fowl.
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| 32. | This bird interbreeds with the collared towhee where their ranges overlap in southwestern Mexico.
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| 33. | Meanwhile, some interested sheepbreeders continued to interbreed and select very strongly for fertility.
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| 34. | The borders between the four subspecies are not sharp, because the subspecies interbreed.
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| 35. | Where they are sympatric, the lineages interbreed.
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| 36. | Xed and the early hominids interbreed to create a new species : modern man.
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| 37. | The two species may be able to interbreed.
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| 38. | If individuals can interbreed and produce fertile offspring, they belong to the same species.
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| 39. | The inability to interbreed is a primary way of separating living animals into distinct species.
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| 40. | Previous research suggested that the three known subgroups of Anopheles gambiae don't interbreed.
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