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About the Cover

Cover Figure


COVER A Chinese native dog, showing one of many morphological types. Although extreme variation in morphology is seen among dog breeds worldwide, they may all have originated about 15,000 years ago from the single East Asia gene pool. 1610 [Photo: Y. Zhang, D. Pan, and L.-Y. Luo]

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Science. ISSN 0036-8075 (print), 1095-9203 (online)