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A researcher wants to study the effects of social class on consumption behavior. He establishes three different categories of social class in terms of amount of income. He then assigns each field worker a specified number of interviews with people in each income category although the interviewers are allowed to select who they interview. This is an example of
Genetic Mutations
Changes or alterations in the DNA sequence that can affect genetic information, potentially leading to genetic disorders or variations in traits.
Fossil Evidence
Physical remains or traces of ancient organisms preserved in geological formations, offering insights into past life.
Theory of Evolution
A scientific explanation for the diversity of life on Earth, proposing that species change over time through processes such as natural selection.
Genes Influence
The impact that genetic makeup has on determining physical and behavioral traits in organisms.
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