Polygenic characteristics have many phenotypes because the number of possible genotypes (and, therefore, phenotypes, if each genotype corresponds to a unique phenotype) is , where n is the number of genes or loci involved.

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answer: b: experiments that showed that all cells are similar in how they metabolize and in their composition

explanation:

regents of the university of california v. bakke, 438 u.s. 265 (1978), was a landmark decision by the supreme court of the united states. it upheld affirmative action, allowing race to be one of several factors in college admission policy.