The "missing link" between birds and dinosaurs was found when fossils of ________ were unearthed in a German quarry
a. Archaeopteryx
b. Phascolarctos cinereus
c. Sphenodon
d. Saurophaganax
a
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The initial skeleton of all vertebrate embryos is made
of a. cartilage. b. collagen. c. compact bone. d. spongy bone. e. fibrous proteins.
Meiosis is to gametes as fertilization is to
A. mitosis. B. sperm. C. egg. D. zygote. E. chromosome.
A-T base pairs in a DNA double helix
A: are of a substantially different length than G-C base pairs. B: are chemically distinct from G-C base pairs. C: are not accessible to DNA binding proteins. D: are more heat stable than G-C base pairs. E: form three hydrogen bonds with each other.
Which of the following is not a function of the replicative form (dsDNA) of phage phiX174?
A. Function to direct the synthesis of plus-stranded DNA. B. Function to direct the synthesis of minus-stranded DNA. C. Function to direct the synthesis of more RF copies. D. Function to direct the synthesis of mRNA.