Mobile bits of DNA that can jump from one location on a chromosome to another location are called
A. exons.
B. introns.
C. pseudogenes.
D. simple sequence repeats.
E. transposons.
Answer: E
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The main class of neurotransmitters involved in regulating mood in vertebrate animals is/are
A. the biogenic amines. B. acetylcholine. C. amino acids. D. gases such as nitric oxide and carbon monoxide. E. acetylcholine and amino acids.
A comparative morphologist would be most likely to study ________
a. theological writings about the origins of life b. the worldwide distribution of cactus-like plants c. the distribution of earthquakes and volcanoes d. differences and similarities in the structures of organisms
An example of a salt-wedge estuary is:
a. the Mississippi Delta. b. Delaware Bay. c. Chesapeake Bay. d. Puget Sound.
The domination of the flowering plants over
the past 100 million years appear to be their coevolution with
a. dinosaurs. b. gymnosperms. c. insects. d. mammals. e. humans