INTERESTING FACTS ABOUT SPECIES—Here are some facts about species and sub-species that will help you understand some of the problems inherent in this interesting field of plant and animal classification:
1 - Chickadees. The Carolina Chickadee (Parus carolinus) and the black-capped Chickadee (Parus atricapillus) look just like each other in every way, and freely interbreed. Yet they have different songs! Although they have been classified as two different species, we have here one species with two alternate gene factors.
SUB-SPECIES OF DOGS-Dogs, dogs, everywhere—and scientists agree that they are all sub-species.
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