Studies have found that the positive-incentive value of various tastes is _________ in anorexic patients than in control patients.
(a) lower
(b) higher
(c) more likely to be absent
(d) more variable
(a) lower
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The disease anthrax is caused by a species belonging to which genus?
A. Bacillus B. Ehrlichia C. Kingella D. Vibrio
Morphological characteristics are widely used for taxonomic classifications because they are ____
a. the most likely indicators of evolutionary relationships b. the most likely to represent reproductive isolation among groups c. easy to assess in living, preserved, or fossilized specimens
d. always the exact phenotypic expression of genotypes e. indicative of genetic relatedness
How does the effect of a sudden drop in predator population compare to the effect of a sudden drop in prey population? a. A sudden drop in predator population results in an increase in prey population,while a sudden drop in the prey population results in a sudden drop in thepredator population
b. A sudden drop in the predator population results in a corresponding drop in theprey population, while a sudden drop in the prey population results in a suddendrop in the predator population. c. A sudden drop in the predator population does not affect prey populationnumbers, but a sudden drop in the prey population will result in a sudden drop inthe predator population. d. A sudden drop in the predator population results in a corresponding suddenincrease in the prey population, but a sudden drop in the prey population doesnot affect the predator population.
Which processes lead to most genetic variation in sexually reproducing organisms?
Select all that apply. A. crossing over B. random fertilization C. independent orientation of chromosomes in meiosis D. cytokinesis