Teaching Evolution

A blog devoted to teaching evolution, both in our schools and in our communities.

Monday, March 28, 2005

As One Gene Changes, So Does Whole Skeleton

Evolution is a gradual process that occasionally includes sudden leaps. One of those sudden leaps has been found in the genes of a certain type of fish called sticklebacks:
scientists have now found that changes in a single gene can produce major changes in the skeletal armor of fish living in the wild....Using genetic crosses between armored and unarmored fish from wild populations, the research team found that one gene is what makes the difference.


At 2:32 PM, Blogger MDS said...

See more on the stickleback here:


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