Examlex
All Hfr strains possess an F factor integrated into the host chromosome.
Social Crusader
An individual who ardently advocates for and engages in activities aimed at promoting social change and addressing societal injustices, often focusing on issues like poverty, inequality, and human rights.
Federal Government
A system of government where power is divided between a national (federal) government and various regional governments.
Working-Class
A social group consisting of people employed in lower-tier jobs, often in manual labor or skilled trade occupations, and who receive wages rather than salaries.
National Origins Act
A United States federal law enacted in 1924, aimed at restricting immigration by establishing quotas based on national origins, significantly limiting immigration from certain regions.
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