The phenotype of ____ does not develop until adulthood
a. muscular dystrophy
b. Marfan syndrome
c. cystic fibrosis
d. hemophilia
e. Huntington's disease
e
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The streamlined bodies seen in sharks, tuna, and dolphins best relate to
A. a recent shared common ancestor. B. dissimilar selection pressures. C. the physical properties of water. D. the need to escape fast-moving predators. E. intelligent design.
By one estimation, the gross global ecosystem valuation is approximately ____
a. equivalent to the total carbon dioxide processed by all ecosystems b. equivalent to the total amount of carbon fixed c. $18 billion per year d. $18 trillion per year e. $18 million per year
The role that humans play in artificial selection is to
A. train organisms to breed more successfully. B. create the genetic variants, which nature then selects. C. determine who lives and who dies. D. choose which organisms E. breed, and which do not. perform artificial insemination.
What are eukaryotic genes composed of?
A) RNA B) organelles C) RNA and DNA D) DNA