The breast muscle of turkeys and chickens is usually referred to as light meat, whereas that of wild ducks and geese is described as dark meat. Which of the following is consistent with this observation?
A. Turkeys and chickens are not closely related to ducks and geese.
B. Turkeys and chickens do not use their breast muscle, ducks and geese do.
C. Turkeys and chickens do not fly for sustained periods, whereas wild ducks and geese do.
D. The muscles of ducks and geese do not contain myosins.
E. The darker body color of ducks and geese provides protective camouflage against predators.
C. Turkeys and chickens do not fly for sustained periods, whereas wild ducks and geese do.
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In a particular layer of rock, a number fossilized ferns are found, but no fossilized mosses are found. What conclusions can be drawn from this finding?
A. The soft tissues of mosses may not have fossilized as readily as the lignified tissues of ferns, so it is difficult to draw any conclusions from this limited sample. B. Mosses and ferns did not coexist in the same environment. C. There are fewer species of moss than ferns. D. Ferns evolved earlier than mosses, so it is not surprising to find a layer with only ferns and no mosses. E. Ferns decompose more rapidly than mosses and thus are more likely to fossilize.
The principle of comparative advantage holds that nations should
a. specialize in activities for which they have the lowest opportunity cost. b. strive to become self-sufficient in production. c. produce only goods and services for which they have absolute advantage. d. become less labor-intensive and more capital-intensive.
Which of the following would be examples of homologous structures?
1.The wing of a bee and the wing of a bird. 2.The leg of a grasshopper and the leg of a kangaroo. 3.The wing of a bird and the flipper of a whale. 4.All animal limbs are homologous.3
Snuppy, a male Afghan hound, was created by transferring the nucleus from an ear cell of the male Afghan, Tai, into an enucleated egg from a donor. The embryo was transplanted into a surrogate mother to develop to term
Which of the following animals would be a genetic match for Snuppy if nuclear DNA were tested and if Snuppy were not a clone, but the product of in vitro fertilization? A) Tai B) the egg donor C) the surrogate D) both Tai and the egg donor E) both Tai and the surrogate