Which of the following processes is not an agent of microevolution?
A) polygenic inheritance
B) natural selection
C) gene flow
D) mutation
E) genetic drift
Answer: A
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The dominant stage in the life cycle of tracheophyte plants is the
A. epiphyte generation. B. sporophyte generation. C. spore generation. D. gametophyte generation. E. angiosperm generation.
Agastino Bassi demonstrated that a type of silkworm disease was caused by a fungus and proposed that many diseases are caused by microorganisms.
Answer the following statement true (T) or false (F)
Most digestion take place in the
a. stomach. b. small intestine. c. large intestine. d. stomach and small intestine equally. e. small and large intestine equally
Which of the following best explains why a particular atom may not form compounds easily?
A) The atom has an uneven number of protons. B) The atom's outer energy shells are completely full. C) The atom has seven electrons in its outer shell. D) The atom has no electrons.