In the field of evolutionary biology, a phenomenon known as Fisher’s runaway provides an interesting nuance to the theory of natural selection. Under natural selection, females of a species are typically drawn to males who offer their offspring the best chance of survival. Yet, in cases of a Fisher’s runaway (also known as runaway selection), the attributes that make the male more attractive for mating can, over time, reduce the survival prospects for the species as a whole.

The classic example of a Fisher’s runaway is the peacock. Although the female peahen is attracted to the peacock’s large, colorful tail, the tail itself offers no advantage for survival. In fact, the opposite is true: The bright colors attract the attention of predators, and the cumbersome size reduces the potential for a successful escape. Thus, to mate on the basis of large, colorful tails is to bring potential ruination to the entire species.

This content has been archived. It is available through our partners, LexisNexis® and Bloomberg Law.

To view this content, please continue to their sites.

Not a Lexis Advance® Subscriber?
Subscribe Now

Not a Bloomberg Law Subscriber?
Subscribe Now

Why am I seeing this?

LexisNexis® and Bloomberg Law are third party online distributors of the broad collection of current and archived versions of ALM's legal news publications. LexisNexis® and Bloomberg Law customers are able to access and use ALM's content, including content from the National Law Journal, The American Lawyer, Legaltech News, The New York Law Journal, and Corporate Counsel, as well as other sources of legal information.

For questions call 1-877-256-2472 or contact us at [email protected]