from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A biological theory stating that a gene that causes an organism to exhibit behavior detrimental to its survival will increase in frequency in a population if that behavior benefits the organism's relatives, which will pass the gene on to subsequent generations.


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  • a southern mating concept

    May 17, 2009

  • We don't choose the families we're born into, but in some organisms, it seems the parents influence the outcome of their reproductive choices. The definitions of this term have been debated among various social/biological/ecological disciplines.

    March 10, 2011