question: What is the definition of the concept of the gene as a unit of natural selection ?
answer: `` that which segregates and recombines with appreciable frequency . ''
turker_answer: The definition of the concept of the gene as a unit of natural selection is `` that which segregates and recombines with appreciable frequency '' .
rule-based: The definition of the concept of the gene as a unit of natural selection is `` that which segregates and recombines with appreciable frequency . .