Aflatoxins are planar, ringed compounds that interact with DNA by ________ and cause frameshift mutations.
A. rearrangement
B. deletion
C. substitution
D. intercalation
Answer: D
Biology & Microbiology
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Viroids characteristically are composed of
A. ssRNA. B. dsRNA. C. ssDNA. D. dsDNA.
Biology & Microbiology
The majority of Drosophila embryo segments will become part of the ________ in an adult fly.
A. abdomen B. thorax C. head D. head or thorax E. bithorax complex
Biology & Microbiology
The primary consumers in natural communities are
a. herbivores. b. carnivores. c. scavengers. d. decomposers. e. all of these.
Biology & Microbiology
In an experiment that has a control and experimental group, the dependent variable is
A. observed in the experimental group. B. not observed in the control group. C. the result of the independent variable. D. All of these statements are true.
Biology & Microbiology