Tuesday, January 15, 2013


Homoplasy: when similar biological structures have developed in two different species that do not share a common ancestor. This is the result of convergent evolution.

Then there is this: koalas have fingerprints so close to human fingerprints you can only tell the difference with an electron microscope. And koalas are the only ones of their close marsupial relatives that have fingerprints.

Missing link? Apparently, the common action of grasping (usually for food in trees) that humans (as well as other higher primates) and koalas share is the best explanation so far as to why we share the unique feature of fingerprints with koalas without a common ancestor. Fingerprints create multidirectional friction on the things we grasp.

Bring your dictionary: http://naturalscience.com/ns/articles/01-04/ns_hll.html
Homoplasy: when similar biological structures have developed in two different species that do not share a common ancestor. This is the result of convergent evolution.

Then there is this: koalas have fingerprints so close to human fingerprints you can only tell the difference with an electron microscope. And koalas are the only ones of their close marsupial relatives that have fingerprints.

Missing link? Apparently, the common action of grasping (usually for food in trees) that humans (as well as other higher primates) and koalas share is the best explanation so far as to why we share the unique feature of fingerprints with koalas without a common ancestor. Fingerprints create multidirectional friction on the things we grasp.

Bring your dictionary: http://naturalscience.com/ns/articles/01-04/ns_hll.html

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