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Name: Akash
Status: other
Grade: other
Location: Outside U.S.
Country: India
Date: Spring 2013


Question:
How animals have three ears ossicles?



Replies:
Hi Akash,

Thanks for the question. I am not sure why animals have three ear ossicles (as opposed to two or four). The presence of three ossicles can be construed as evidence for a common ancestor.

I hope this helps. Please let me know if you have more questions. Thanks Jeff


The evolution of the auditory structures in the human has been thoroughly described. One of many sources explaining this evolution can be found: http://en.wikipedia.org/wiki/Evolution_of_mammalian_auditory_ossicles Steve Sample


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