In which phase of mitosis do chromosomes arrive at opposite sides of the cell?
a. anaphase
b. prophase
c. metaphase
d. telophase
e. interphase
ANSWER: d
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Darwin bred pigeons to have particular traits. Today people breed dogs, cats, horses, and other animals for the same reason. These activities illustrate
A) negative selection. B) positive selection. C) artificial selection. D) veterinary selection.
Which type of plant hormone appears to play a major role in gravitropism in roots and shoots?
a. salicylic acid b. gibberellins c. abscisic acid d. auxins e. oligosaccharins
Which of the following is NOT one of the five
categories of enzyme catalyzed reactions? a. functional group transfer b. electron transfer c. condensation d. cleavage e. neutralization
In some organisms, the primary function of a gene in a cell is to participate in regulating the body as a whole rather than responding to the cell's immediate environment. These organisms would be
A. diploid. B. multicellular. C. prokaryotic. D. bacterial.