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A. Fore-limb of Monkey B. Fore-limb of Whale


 What is meant by homology? Essential similarity of architecture, though the appearances may be very different

This is seen in comparing these two fore-limbs, A, of Monkey, B, of Whale. They are as different as possible, yet they show the same bones, e.g. SC, the scapula or shoulder-blade; H, the humerus or upper arm; R and U, the radius and ulna of the fore-arm; CA, the wrist; MC, the palm; and then the fingers.

Author

The Project Gutenberg EBook of The Outline of Science, Vol. 1 (of 4), by J. Arthur Thomson
Published in 1922
Available from gutenberg.org

Posted on

Friday 17 July 2020

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1200*1164

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Albums

• Natural History / Mammals
• Natural History / Mammals / Primates

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