At low population density, __________ is favored, quickly producing as many offspring as possible.
Fill in the blank(s) with the appropriate word(s).
r-selection
Biology & Microbiology
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You extract DNA from an E. coli cell and observe it is hemi-methylated. Which strand of DNA is older?
A. The methylated strand B. The strand that is not methylated C. Neither—they are the same "age."
Biology & Microbiology
In vivo testing is useful for diagnosing ________.
A. HIV B. whooping cough C. tuberculosis D. hepatitis A E. rubella
Biology & Microbiology
Replication of the E. coli chromosome is initiated at
A. a single site. B. two sites. C. 10 sites. D. multiple sites.
Biology & Microbiology
What immune response is present in vertebrates but absent in invertebrates?
A. lymphocytes B. antibody-based humoral defense C. complement system D. All of the choices are correct.
Biology & Microbiology