The coefficient of inbreeding (F) can be used to estimate the proportion of loci that are __________
A) fixed in a population
B) homozygous identical by descent
C) heterozygous by descent
D) lethal alleles
E) recessive
B
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According to bottom-up and top-down control models of community organization, which of the following expressions would imply that an increase in the size of a carnivore (C) population would negatively impact its prey (P) population, but not vice versa?
A) P ? C B) P ? C C) C ? P D) P ? C ? P E) C ? P ?
What best describes whether a virus is likely to infect a particular cell?
A. Viruses infect the first cells they encounter. B. If a host cell is weakened, viruses are likely to infect it. C. A virus will only infect host cells with the correct surface receptors. D. Viruses only attack epithelial cells, such as the cells lining the lungs. E. The initial choice is random but once a cell type is chosen it becomes the preferred host . Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about viral host range? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which of the following is(are) mostly involved in a long-lasting response to stress?
A) mineralocorticoids B) glucocorticoids C) androgens D) oxytocin
To obtain energy from starch and glycogen, the body must begin by
A) hydrolyzing the starch to glucose and the glycogen to amino acids. B) hydrolyzing both starch and glycogen to glucose. C) converting both starch and glycogen to fatty acids. D) removing one glucose at a time with a condensation reaction.