Polyploidy in plants
A. allows for adaptation to diverse environments.
B. allows humans to create plants with unusual flowers.
C. may alter the levels of gene expression.
D. is very common.
E. All of these statements are true regarding polyploidy in plants.
Answer: E
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The phenotypes of complex traits vary with both genotype and environment. An important implication of this is that:
A. we can't predict the expression of a genotype without knowing its environment. B. we can't predict how a given environment will affect the expression of a trait without knowing its genotype. C. no one genotype will produce the "best" phenotype in all environments. D. several different genotypes may produce equally fit phenotypes in the same environment. E. All of these choices are correct.
The boreal forests of North America are
dominated by a. spruce, fir, and pine. b. redwoods and sequoia. c. birch and aspen. d. long-leaf and loblolly pines. e. cedars and junipers
Adult stem cells in the brain are totipotent and differentiate into neurons and glial cells
_________________ Indicate whether the statement is true or false.
The Acadian flycatcher, Willow flycatcher, and Least flycatcher are morphologically very similar, but live in different habitats and do not reproduce with one another. Which species concept would be the most useful in determining if these flycatchers are different species? Explain.
What will be an ideal response?