Which statement factors into artificial but not natural selection?
A. Most organisms are capable of producing more offspring than typically survive.
B. Phenotypic variation of a species has variable appeal to humans interested in that species.
C. Phenotypic variation exists within populations.
D. Phenotypic variation can influence reproductive success.
E. Phenotypic variation within a species is due in part to inherited characteristics.
B. Phenotypic variation of a species has variable appeal to humans interested in that species.
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The mechanism that causes a vine’s tendrils to grow around an object, such as a wire fenceline, is called ____
a. thigmotropism b. phototropism c. gravitropism d. vernalization e. photoperiodism
In rabbits, there are four different versions of the gene for coat color. What pattern of inheritance is this?
A) codominance. B) polygenic inheritance. C) incomplete dominance. D) multiple alleles.
An accident victim lost a lot of blood and was rushed to the emergency room. In the emergency room, the first thing the doctors did was replace lost fluids by giving an IV of pure water. But this caused the patient to die. Propose a reason why the
patient died. What will be an ideal response?
When electrons are removed from nutrients via an oxidation reaction, the coupled reduction reaction may be
A) NAD+ ? NADH. B) NADH ? NAD+. C) FAD ? FADH2. D) either FAD ? FADH2 or NAD+ ? NADH. E) either NAD+ ? NADH or NADH ? NAD+.