22. Which of these is a major trend in land plant evolution? (A) the trend toward a sporophyte-dominated life cycle (B) the trend toward a gametophyte-dominated life cycle (C) the trend toward larger gametophytes (D) the trend toward smaller size

16. A principal problem with inserting an unmodified mammalian gene into a plasmid and then getting that gene expressed in bacteria is that _____. (A) bacteria translate only mRNAs that have multiple messages (B) prokaryotes use a different genetic code from that of eukaryotes (C) bacteria cannot remove eukaryotic introns (D) bacterial RNA polymerase cannot make RNA complementary to mammalian DNA

22. Which of these is a major trend in land plant evolution?
(A) the trend toward a sporophyte-dominated life cycle
(B) the trend toward a gametophyte-dominated life cycle
(C) the trend toward larger gametophytes
(D) the trend toward smaller size

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