Which of the following would be the LEAST
satisfactory organism for genetic research?
a. humans
b. bacteria
c. mice
d. fruit flies
e. pea plants
A
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Measuring its costs and benefits in terms of energy spent and/or gained, mutualism
A. is a lose-lose interaction. B. results in gain for both individuals. C. results in a gain for one individual and a loss for the other. D. results in a gain for one individual and neither a gain nor a loss for the other. E. none of these
What key conclusion did Riesch and Schlupp draw from the life history data of the Atlantic mollies?
A. More energy is invested in producing larger offspring when the populations live in environmentally stressful habitats. B. The populations exposed to H2S are able to use the toxic molecule for metabolic energy. C. Genetic regulation in the species results in production of equal sizes of offspring whether exposed to stressful environments or not. D. More energy is invested in producing many more offspring when the populations live in environmentally stressful habitats. E. The populations are only able to survive and reproduce when in stressful environments of either darkness or H2S.
According to the redundancy hypothesis, species are redundant if
A. they have an effect on the ecosystem that is disproportionate with their abundance. B. they could be eliminated or replaced by others with no loss of ecosystem function. C. their ecological niche overlaps somewhat with another species. D. they have grown beyond their carrying capacity for a particular ecosystem.
Which of the following would have the greatest genetic diversity?
A. a subspecies B. a local population of a species C. a species D. a population produced by asexual reproduction