What molecule(s) exhibits self-splicing?
A. rRNA
B. tRNA
C. mRNA
D. rRNA and tRNA
E. rRNA and mRNA
D. rRNA and tRNA
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One reason we see relatively little genetic variation among human regional populations is that:
A. extensive migration among human populations has homogenized gene pools. B. extensive convergent evolution has homogenized gene pools. C. genetic drift has reduced variation in most regional populations over time. D. humans migrated out of Africa so recently that we haven't had enough time for regional variation to accumulate. E. None of the answer options are correct.
The circulation of an agent in the bloodstream is given a name ending in
A. -ase. B. -ing. C. -emia. D. -ation.
What are male secondary sex characteristics in humans? Check all that apply.
_____ increase in muscle mass _____ increase in facial hair _____ decrease in body hair _____ decrease in testosterone levels ______ deepening of voice
Of these membrane transport processes, which do/does not make use of a vesicle?
A. phagocytosis B. osmosis C. pinocytosis D. neither osmosis nor facilitated diffusion E. facilitated diffusion