Which of the following are associated with the process of stem nodulation?
A. Nod factors are not part of stem nodulation.
B. A common bacterial species associated with stem nodulation is Bradyrhizobium.
C. Bacteria enter through ruptures in the stem epidermal cells.
D. All of these are associated with stem nodulation.
Answer: C
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During transcription of a given protein-coding gene, both strands are used as template
A. true B. false
A serious limitation of using a retrovirus as a vector for gene therapy is that
A) the retrovirus may insert into a proto-oncogene, causing cancer. B) a genetically modified retrovirus causes AIDS. C) it causes ADA accumulation. D) reverse transcriptase will not work in human cells.
Angiosperms are more advanced than gymnosperms
because gymnosperms lack which structure found in angiosperms? a. independent sporophyte b. pollen grains c. flowers d. spores e. seeds
_______ tend(s) to occur more frequently than ________
A) Synonymous substitutions, nonsynonymous substitutions B) Genetic divergence, genetic convergence C) Transitions, transversions D) A and B only E) A, B, and C