Mutation of the C group gene in Arabidopsis
thaliana produces flowers that
a. are sterile.
b. have no carpels.
c. have no stamens.
d. have a profusion of petals.
e. are all of these.
Answer: e
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A polymerization reaction is made irreversible by:
A. hybridization of a free nucleotide to a template B. breaking of the bond between the 2' carbon and the hydroxyl group C. creation of a phosphodiester bond D. hydrolysis of a pyrophosphate group into two inorganic phosphates E. entry of a free nucleotide into an RNA polymerase
The effects of inbreeding depression has been documented in ________
A) plants only B) animals only C) both plants and animals D) This is a hypothetical construct and has yet to be documented.
Comparison of a cancer cell to a normal cell reveals that ____
a. only cancer cell growth is limited by contact inhibition b. only normal cell growth is limited by contact inhibition c. cancer cells cannot metastasize, while normal cells can d. regulation of mitosis is strictly regulated in cancer cells, but not in normal cells. e. cancer cells remain adherent to other cells, while normal cells do not
All of the following apply to the subphylum Chelicerata of the phylum Arthropoda except:
a. they have chelicerae. b. males are smaller than females. c. body is composed of three parts. d. they have three pairs of antennae.