For natural selection to result in evolutionary change _____________.

a. variation must exist in a population
b. reproductive success of different phenotypes must differ
c. variation must be inherited from one generation to the next
d. all of the choices are correct


Answer: d. all of the choices are correct

Biology & Microbiology

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A. true B. false

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During regulation by attenuation in the trp operon, if the pause and terminator loops form in mRNA, transcription is uncoupled to translation and protein synthesis is not occurring.

Answer the following statement true (T) or false (F)

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Monoclonal antibodies are used for all of the following EXCEPT ____

a. home pregnancy tests b. vaccines c. prostate cancer screening d. drug delivery e. lab tests

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