genetic load

noun

Definition of genetic load 

: the decrease in fitness of the average individual in a population relative to the fittest genotype due to the presence of deleterious genes in the gene pool

First Known Use of genetic load

1950, in the meaning defined above

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The first known use of genetic load was in 1950

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genetic load

noun

Medical Definition of genetic load 

: the decrease in fitness of the average individual in a population due to the presence of deleterious genes or genotypes in the gene pool

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