Four of the five methods listed below are used to
reduce the number of defective genes in a
population. Select the exception.
a. genetic counseling
b. gene replacement
c. mutagen reduction
d. diet modification
e. genetic screening followed by gene modification
Answer: d
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Examine Figure 23.2 in your textbook. According to this figure, the amphibians are a _____ group
A. monophyletic B. paraphyletic C. polyphyletic
Veins that carry oxygenated blood from the lungs to the heart.
2) System that consists of both the cardiovascular and the lymphatic systems. 3) The site where certain lymphocytes mature, enabling them to fight specific disease-causing organisms. 4) This simple practice will reduce your chance of heart disease and stroke. 5) Vessels that carry blood back to the heart from the body. A) Jugular veins B) Pulmonary veins C) Circulatory D) Capillaries E) Spleen F) Thymus G) Tonsils H) Aorta I) Veins J) Exercise
Pulmonary veins carry
A. deoxygenated blood. B. oxygenated blood. C. a mixture of oxygenated and deoxygenated blood.
All of the following are methods of disinfection or sterilization, except
A. ethanol. B. lyophilization. C. dry oven. D. triclosan. E. gamma radiation.