When a gene has the ability to influence several different aspects of the phenotype of an organism, this is referred to as
A. polygenic inheritance.
B. pleiotropy.
C. multiple alleles.
D. lack of dominance.
B. pleiotropy.
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Examine the flux diagrams in Figure 25.6 to address the following questions. True or false. CO2 is considered a greenhouse gas because it traps heat emitted from Earth's surface in the atmosphere, affecting global temperatures
Indicate whether the statement is true or false.
A 76-year-old man with intermittent fevers has blood cultures drawn three times. The second set is positive and grew out of a Corynebacterium spp. This organism is considered:
a. pathogenic. b. virulent. c. a contaminant. d. normal flora.
Mycorrhizal fungi obtain food from plants in exchange for water and nutrients. This is an example of
A. mutualism. B. commensalism. C. herbivory. D. parasitism. E. predation.
Which of the following organs is not considered part of the digestive system?
a. tongue b. spleen c. gallbladder d. pancreas e. salivary gland