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

Biology & Microbiology

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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.

Biology & Microbiology

Meiosis is to gametes as fertilization is to

A. mitosis. B. sperm. C. egg. D. zygote. E. chromosome.

Biology & Microbiology

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.

Biology & Microbiology

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.

Biology & Microbiology