Unformatted text preview: 19. The best model to date that explains flower formation in plants? a) hormones b) ABC k—Bb
c) plasmids d) thermophils
e) anaerobes 20. Viruses: a) are comprised of capsids and RNA or DNA
ﬂare all lytic
c ere the first organisms to appear on earth ‘ 31V are effectively'controlled by vaCoines
e) evolved from envelope viruses to retroviruses ...
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- Fall '07