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What effects have been shown in early-intervention programs for disadvantaged children?
Genetic Variation
The diversity in gene frequencies, which can influence differences within species' physical appearance, behavior, and susceptibility to diseases.
Population
A group of individuals of the same species living and interbreeding within a given area.
Neutral Alleles
Genetic variants that do not affect the fitness of an organism and are unaffected by natural selection.
Population Size
The total number of individual organisms inhabiting a particular area or environment at a given time.
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