Which of the following are disadvantages of the aristotelian classification system?
i. the system contained too many groups to be useful.
ii. the system did not show relatedness of organisms.
iii. organisms were grouped by habitat, not structrual similarity.
iv. it was an expensive and highly technical process.

Which of the following is a limitation of a clinical trial? a.)amount of random assignments b.)hospital cost c.)number of test tubes d.)amount of peer review

Suppose that on a small island off the coast of scotland, 32 percent of the population has blue eyes, which means that these individuals must be homozygous for the blue eye color gene (bb). the only other eye color found on the island is brown, and individuals that are homozygous for the brown eye color gene (bb) or heterozygous (bb) will have brown eyes because brown is the dominant gene. assume this population is in hardy-weinberg equilibrium. if 100 babies are born next year, how many of these would you expect to have brown eyes and be heterozygous? a. 58 b. 49 c. 29 d. 43

The term facultative anaerobe refers to an organism that