Which of these is not a common concern about genetically modified food crops?
A) They may have unintended negative effects on surrounding organisms.
B) They may cause the evolution of pesticide-resistant crop pests.
C) They may cause a reduction of genetic diversity among food crops.
D) They may increase the number of human infections by transgenic E. coli.
E) They may cause unforeseen allergies in those who consume the genetically modified food.
D) They may increase the number of human infections by transgenic E. coli.
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What characteristic does not describe a vertebrate?
a. notochord. b. backbone. c. exoskeleton. d. gills or lungs. e. posterior tail.
Which is not considered a disadvantage of having an exoskeleton? a. Exoskeletons can get relatively heavy
b. Molting is needed to grow. c. Unique construction of the joints for appendages. d. It diminishes the ability to maintain buoyancy.
If a population undergoes selection of adaptive
traits, it most logically will lead to ___ of the species.
a. extinction b. improvement c. artificial selection d. evolution e. more than one of these
Water is important to the interactions of biological
molecules because it a. promotes hydrophobic and hydrophilic interactions. b. stabilizes temperature. c. is an excellent solvent for polar and ionic substances. d. has strong cohesive properties. e. is all of the above.