Mutations can be
a. random.
b. beneficial.
c. harmful.
d. heritable.
e. all of these
E
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Humans with mutations in the gene encoding AQP1 (aquaporin-1) that cause the absence of AQP1are
characterized by an inability to ____.
a. concentrate urine despite prolonged thirsting d. control sweating b. control edema e. salivate c. make large volumes of dilute urine
Plants that show a pattern of stomatal opening and closing that is the reverse of C3 plants are called
A. CAM. B. C4. C. Calvin cycle. D. Temperate.
Horses and donkeys can breed and produce sterile offspring known as mules. Horses and donkeys remain separate species because of this hybrid sterility, which is:
A. an allopatric barrier to reproduction. B. a sympatric barrier to reproduction. C. a prezygotic barrier to reproduction. D. a postzygotic barrier to reproduction.
Fish have scales that enable them to live in a water environment. This is an example of
A. metabolism. B. homeostasis. C. cellular organization. D. development. E. adaptation.