Superantigens cause
A. stimulation of T cells to overproduce cytokines.
B. specific activation of phagocytic cells and stimulation of T cells to overproduce cytokines.
C. specific activation of phagocytic cells.
D. None of the choices are correct.
Answer: A
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The Golgi apparatus is responsible for the
A. replication of chromosomes. B. the assembly of ribosomes. C. packaging of materials for excretion. D. formation of mesosomes.
Combined DNA Index System (CODIS) is
A) a fifteen-base DNA sequence used in DNA profiling. B) a type of mutation used in forensic applications. C) a system for crime laboratories to share DNA profiles. D) a technology used to amplify DNA found at crime scenes.
Atlantic mollies of the species Poecilia mexicana are found in the habitat(s) of
A. coastal tidal pools and coral reefs. B. estuaries where saltwater and freshwater mix. C. isolated desert pools left from hurricane storm surges. D. streams and cave waters with clean water and H2S poisonous molecules. E. All of the answer choices are correct.
What process does NOT produce variation?
a. crossing over b. random alignment of chromosomes during meiosis c. mitosis d. genetic recombination of alleles e. sexual reproduction