Fisherian runaway

（重定向自Runaway sexual selection）

Female (left) and male (right) common pheasant, a sexually dimorphic species by which morphological traits vary between sexes

The peacock, on the right, is courting the peahen, on the left.

Fisherian or Fisher's runaway, first proposed by Ronald Fisher in the early 20th century, is a hypothesized genetic sexual selection mechanism for the evolution of exaggerated male ornamentation (a subtype secondary sexual characteristic) observed in numerous species that produce offspring through sexual reproduction; based upon female choice, the preference or attraction of females for ornamented male mates.

单词	Runaway sexual selection
释义	Runaway sexual selection 英语百科 Fisherian runaway （重定向自Runaway sexual selection） Fisherian or Fisher's runaway, first proposed by Ronald Fisher in the early 20th century, is a hypothesized genetic sexual selection mechanism for the evolution of exaggerated male ornamentation (a subtype secondary sexual characteristic) observed in numerous species that produce offspring through sexual reproduction; based upon female choice, the preference or attraction of females for ornamented male mates.
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