Which type of experiments deliberately inactivate a gene?
A) ablation
B) control
C) downregulation
D) knockout
E) tinman
Answer: D) knockout
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A population of lizards lives in a rocky area next to a desert. Some lizards are light colored and blend into the sand. Others are dark and blend into the rocks. What may happen to this population of lizards over time?
A. They may evolve into two separate species as a result of directional selection. B. They may remain one species as a result of stabilizing selection. C. They may remain one species as a result of disruptive selection. D. They may evolve into two separate species as a result of disruptive selection. E. They may remain one species as a result of directional selection.
Which of the following is considered an important function of the skin?
A. Hold muscle to bone B. Manufacture blood cells C. Produce antibodies D. Control body temperature
A metabolic pathway that is both anabolic and catabolic is a(n)
A) amphibolic pathway B) constructive pathway C) antagonistic pathway D) glycolytic pathway
Which of the following drugs will be useful in the treatment of this disease?
A. antiviral drug B. antiprotozoal drug C. antiprion drug D. antifungal drug