Clayton and colleagues (2003 ) examined the frequency of host shifts observed among both wing feather and body lice that infect doves
They observed that body lice rarely shift host species, whereas wing feather lice often shift from one species to another. The higher frequency of host shifts observed in wing feather lice is due to the observation that ________. A) wing feathers containing lice molt frequently, and are frequently used by other hosts to build nests
B) body feathers do not come into contact with other hosts as frequently as wing feathers
C) the lice that infect wing feathers often move from host to host on a parasitic fly
D) doves preen each other's wing feathers at a higher frequency than body feathers
C
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a. a complete pistil b. seven cells embedded in floral tissues c. a single ovary d. a seed e. shoot parts bearing female flowers
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removes oxygen from the erythrocyte. b. carries carbon dioxide in the erythrocyte. c. converts carbon dioxide to carbonic acid. d. increases the pH of the blood. e. increases the permeability of the capillary to carbon dioxide.
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