Natural selection is based on all the following except:
a. variation exists within every population
b. populations tend to produce more individuals than the environment can support
c. there is differential reproductive success with populations
d. individuals must adapt to their environment
3. the fittest individuals tend to leave the most offspring

Which of the following is not true of the formation of a bacterial translation initiation complex? a. if-3 binding to gtp is required for the charged trna to associate with the first mrna codon. b. n-formylmethionyl-trnafmet binds in the p site. c. if-1, if-2, and if-3 dissociate upon the 50s subunit binding. d. the 30s ribosome associates with the mrna before the 50s ribosome.