The medullary index of human hair is ________ the medullary index for most other animals.

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The medullary index of human hair is less than the medullary index for most other animals. Humans have a smaller medulla, or none at all, compared to other animals like cats, dogs, and horses, which have a larger medulla relative to the size of the hair shaft. This difference in medullary index can be used to distinguish human hair from animal hair in forensic investigations.

The Medullary Index of Human Hair Is ________ the Medullary