If a tumor suppressor gene becomes mutated, which of the following is not true?
A. Genes that inhibit the cell cycle are not turned on.
B. The cell cycle continues when it should not.
C. Apoptosis is less likely to occur.
D. Genes that encode enzymes that repair DNA are not turned on.
E. A "gain-of function" mutation has occurred.
Answer: E
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a. covalent bonds b. hydrogen bonds c. nonpolar interactions d. ionic bonds e. van der Walls forces
If a mutation prevented the formation of lignin, which tissue would be most affected?
a. vascular cambium b. parenchyma c. collenchyma d. sclerenchyma e. mesophyll
Before clotting factors from recombinant DNA became available, more than half of hemophiliacs in the U.S. acquired
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Which of the following is NOT a function of the eukaryotic cytoskeleton?
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