Darwin spent five years doing research while sailing aboard the
a. H.M.S. Pinafore.
b. H.M.S. Beagle.
c. H.M.S. Hood.
d. H.M.S. Constitution.
e. H.M.S. Howe.
B
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The atomic number of an element is equal to the number of:
A. protons plus neutrons. B. neutrons plus electrons. C. neutrons only. D. protons only. E. protons plus electrons.
Which of the following would bear the most resemblance to Archaeopteris, an ancient plant genus that preceded gymnosperms and angiosperms?
A. A ginkgo lacking vascular tissue. B. A pine tree that does not produce cones. C. A cycad that does not produce coralloid roots. D. A grass species that lacks flowers. E. A sunflower that does not produce endosperm.
Which of the following is an example of interference competition? a. Deer and blue jays eating acorns
b. Bluegill and catfish both eat worms. c. Maggots decomposing a rotting apple before the bacteria can decompose it. d. Hyenas chasing a lion away from the zebra carcass. e. A dove nesting in a pine tree while a blue jay nests in an oak tree.
Expression of the SRY gene causes an embryo to
develop __________. Fill in the blank(s) with the appropriate word(s).