fisher's theorem of the sex ratio
 

* 1.In a population where individuals mate at random, the rarity of either sex will automatically set up selection pressure favoring production of the rarer sex. Once the rare sex is favored, the sex ratio gradually moves back toward equality

English Related Words* a babe in the woods

* a bird in the hand is worth two in the bush

* a blot on the landscape

* a bolt from the blue

* a brand from the burning

* a buck of the first head

* a bun in the oven

* a cast of the eye

* a chip of the old block

* a chip off the old block

* a dog in the manger

* a drain on the resources

* a drop in the bucket

* a face like the back of a bus

* a feast for the eyes