A trait with high heritability responds rapidly to selection pressures, whereas a trait with a low heritability responds slowly or not at all
A. true
B. false
A
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Which structure or compartment is part of the symplast?
A) the interior of a vessel element B) the interior of a sieve tube C) the cell wall of a mesophyll cell D) an extracellular air space E) the cell wall of a root hair
The C4 cycle
a. replaces the carbon fixation stage of the Calvin cycle. b. supplements the activity of rubisco by providing a second source of 3PGA for the reduction stage of the Calvin cycle. c. is more efficient than the Calvin cycle because less ATP is consumed in the process. d. ensures that CO2 is provided to rubisco and thus prevents photorespiration. e. is most commonly associated with plants living in humid climates.
Many male birds will expend a great deal of energy building nests. Females will mate with the males who build the
best nests. This is best described as an example of ____.
a. natural selection b. sexual selection c. runaway selection d. an invasive species e. disruptive selection
Which primate group is classified as hominins?
a. bonobos b. gorillas c. humans d. gibbons e. orangutans