In what order do the segmentation genes function in Drosophilia?
A) gap, segment-polarity, pair-rule
B) segmentational, helical, spherical
C) transdeterminal, gap, pair-rule
D) pair-rule, transdeterminal, gap
E) gap, pair-rule, segment-polarity
Answer: E
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Bacterial and archaeal ribosomes are known as ________ ribosomes, based on their sedimentation coefficient.
A. 70S B. 80S C. 50S D. 30S
Which class of mollusks contains the majority of species in phylum Mollusca?
a. Bivalvia b. Cephalophoda c. Gastropoda d. Polyplacophora
It has been suggested that RNA was the first informational molecule to evolve because:a
RNA molecules are more central to modern inheritance than DNA. b. RNA molecules can catalyze a variety of biologically important reactions. c. RNA molecules degrade more slowly in solution than DNA molecules. d. RNA molecules were the first molecules synthesized by Miller and Urey. e. RNA molecules have different structures..
Paul Ehrlich discovered the first antibiotic.
Answer the following statement true (T) or false (F)