When Clausen and colleagues grew genetically identical individuals of the yarrow plant at different elevations, the results are shown in the accompanying figure. This observation verifies that ________
A) yarrow plants mutate quickly when grown in different environments
B) the genotypes of yarrow plants has nothing to do with how tall these plants grow
C) yarrow plants grow taller at lower elevations and shorter at higher elevations regardless of their genotype
D) the genotypes of yarrow plants interacts with environmental influences to produce the phenotype
D
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Koplik's spots are small red lesions with a white center that form in the mouth and are associated with ________.
A. mumps B. chickenpox C. measles D. flavivirus infection
What is the chemical in tobacco smoke that's able to activate the brain's reward pathways, thus making smoking a very addictive process?
What will be an ideal response?
How are termite-related protists and aphid-related proteobacteria similar?
A. Both are protozoans that live within insect hosts. B. Both are parasites to their respective hosts. C. Both are mutualists with their respective hosts. D. Both are types of endosymbiotic bacteria.
The pattern of distribution for a certain species of kelp is clumped. The pattern of distribution for a population of snails that live on the kelp would be
A) clumped. B) random. C) uniform.