A mutation is a
A) dose of radiation. B) defective egg or sperm cell.
C) physical deformity, such as the loss of a limb. D) change in the DNA sequence.
D
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The toxic superoxide ion is converted to harmless oxygen by two enzymes,
A. catalase and hydrogen peroxidase. B. superoxide dismutase and catalase. C. superoxide dismutase and hydrogen peroxidase. D. catalase and oxidase. E. superoxide dismutase and oxidase.
The population was more likely to experience genetic drift before hunting than it was after hunting
a. true b. false
Cave-dwelling catfish and cave-dwelling salamanders share striking similarities: Both organisms lack pigmentation, and their eyes are reduced or absent. The most recent common ancestor to these organisms had normal pigmentation and fully developed eyes
The similarities between cave catfish and cave salamanders are an example of A) phylogeny. B) analogy. C) homology. D) exaptation.
Answer the following questions true (T) or false (F)
1. Although HSV-1 usually causes oral lesions and HSV-2 usually causes genital lesions, it is possible that oral sexual contact can transmit HSV-1 to the genitals and HSV-2 to the mouth. 2. The majority of human papilloma virus strains are oncogenic, and most infections lead to cancer. 3. Despite the approval of several vaccines against human papilloma virus since 2006, infection rates of HPV in young women have not declined.