Base-modifying chemicals such as aflatoxin B1 or nitrosoguanidine cause mutations by
A) increasing the likelihood of depurination.
B) causing double-stranded breaks in the DNA sugar-phosphate backbone.
C) causing mispairing during DNA replication.
D) causing pyrimidine dimers.
E) increasing the likelihood of depurination or causing mispairing during DNA replication.
Answer: E
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a. Cephalaspidomorphi. b. Chondrichthyes. c. Osteichthyes. d. Reptilia.
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a. protons only. b. electrons only. c. neutrons only. d. both protons and electrons. e. both neutrons and protons.
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What is the first step in the pressure flow mechanism of translocation?
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