If you are given a recombination frequency of 34% between genes X and Y and 27% between X and Z, can you predict the order of the three genes?
A) Yes; the order is X-Z-Y.
B) Yes; the order is X-Y-Z.
C) Yes; the order is Z-X-Y.
D) No; based on this data alone, the order could be Z-Y-X or X-Y-Z.
E) No; based on this data alone, the order could be X-Z-Y or Z-X-Y.
E
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A. the host's defenses. B. the number of organisms present in or on the host. C. the virulence of the organism. D. All of the choices are correct.
In regions of the human body that must precisely control what enters or exits tissues, which one of the following is(are) present to ensure adjacent cells are packed close together?
A) basement membrane B) adhesion junctions C) collagen D) tight junctions E) gap junctions
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A) central species B) climax species C) pioneer species D) rogue organisms
Which of these is responsible for carrying a specific amino acid to the ribosome during protein synthesis?
A. DNA B. mRNA C. tRNA D. ribosome