Chlorosis in plants is a condition best explained by:
A. lack of water.
B. lack of certain minerals.
C. lack of oxygen.
D. lack of carbon dioxide.
E. lack of soil moisture.
B. lack of certain minerals.
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Which of the following bioenergetic processes CANNOT occur in hyperthermophiles?
A) chemoorganotrophy B) chemolithotrophy C) photosynthesis D) chemoorganotrophy, chemolithotrophy, and photosynthesis
The incubation period of leprosy is
A. 1 week. B. 3 weeks. C. 3 months. D. 3 or more years
Initially, which of the following isolating mechanisms is likely to have been the most important in preventing gene flow between the two populations of Rhagoletis?
A) Gamete incompatibility B) Temporal isolation C) Mechanical isolation D) Reduced hybrid viability
Homologous chromosomes recognize one another by their centromeres, move through the cell toward one another, and come to lie next to each other in a process called
A. crossing over. B. synapsis. C. differentiation. D. trisomy.