Which of the following can produce a population of individuals with a relatively high frequency of a
deleterious allele?
a. natural selection
b. mutation
c. migration between large populations
d. the founder effect
e. artificial selection
D
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Discuss the theory of secondary endosymbiosis and defend the theory by providing evidence that supports it
What will be an ideal response?
If a fungicide was applied near a plant, how might it kill the plant?
A. By killing the fungus associated with the plant's roots B. By killing the insects that pollinate the plants C. By breaking down the chitin in the plant's cell walls D. Fungicides kill fungi, not plants, so the plant would be fine.
Control of body temperature is an example of which
of the following? a. homeostatic mechanism b. positive feedback system c. endocrine function d. negative feedback system e. both homeostatic mechanism and negative feedback system
Which of the following cell types is long lived and continues to produce antibody?
a. cytotoxic T cells b. memory B cells c. T helper cells d. plasma cells
e. macrophages