Which of the following is NOT a cause of mutation?
Errors in DNA replication
Errors during meiosis
Exposure to radiation
Exposure to tobacco
All of the choices are causes of mutations
All of the choices are causes of mutations
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Which of the following chemical properties or interactions of purines and pyrimidines does not affect the structure and function of nucleic acids?
A. planar nature of bases due to resonance B. tautomerism of the bases C. absorbance of UV light D. hydrophobic stacking E. base pairing
Which functional groups have been altered in a ddNTP compared to a dNTP?
A) The ddNTPs have a 2? OH and a 3? H, while dNTPs have a 2? H and a 3? OH. B) The ddNTPs have a 2? H and a 3? H, while dNTPs have a 2? H and a 3? OH. C) The ddNTPs have a 2? OH and a 3? OH, while dNTPs have a 2? H and a 3? H. D) The ddNTPs have a 2? H and a 3? H, while dNTPs have a 2? OH and a 3? OH. E) The ddNTPs have a 2? H and a 3? OH, while dNTPs have a 2? H and a 3? H.
A man with pattern baldness and a woman who has no baldness have a son who develops pattern baldness. Their son has a daughter who also develops pattern baldness. They determine that her expression of this trait is not a symptom of a medical condition. If her mother does not have pattern baldness, the daughter's genotype is ________ and her mother's genotype is _____________.
A. BB, bb B. BB, Bb C. bb, BB D. Bb, Bb E. bb, Bb
Each of the following is an effect of complement activation EXCEPT
A) interference with viral replication. B) bacterial cell lysis. C) opsonization. D) increased phagocytic activity. E) increased blood vessel permeability.