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An advantage of light skin is greater absorption of Vitamin __________.

______________ is a change in the DNA sequence that can produce an altered gene.

Due to the society’s common brutality and mistreatment of darker-complexioned citizens, Brazil is commonly considered to be a/n _____________.

In his attempt to classify all living things. he contributed one of the earliest and most influential attempts at producing a racial classification system for humans.

Evolution is simply a change in the frequencies of alleles in the gene pool of a population.

The concept of ____________ suggested that the earth is constantly subject to shaping and reshaping by natural forces working over vast stretches of time.

Before the work of Hardy and Weinberg, it was thought that dominant alleles must, over time, inevitably cancel recessive alleles out of existence.  

Sickle-cell anemia and the epicanthic eye fold are examples of ________________.

Which of the following statements about mutations is FALSE?

All mutations occur as a result of an environmental exposure to a number of various known mutagens including radiation, alcohol, lithium, and even some antibiotics and vitamins.