Umbilical Cord Length

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Human Uniqueness Compared to "Great Apes": 
Absolute Difference
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The human umbilical cord is generally about 55 cm long in term gestations. That of chimpanzees and other apes is usually considerably longer. The reasons for this are not understood.


  1. Nabelschnur-Längen bei Insektivoren und Primaten, Spatz, Von W. B. , Z. Säugetierk, Volume 33, p.226-239, (1968)