Totipotent nuclei are capable of:
a. controlling the expression of other genes in the nucleus.
b. directing normal development of an organism.
c. causing cells to lose the ability to differentiate.
d. undergoing unlimited nuclear divisions.
e. stopping the cell cycle at will.
b
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Discuss some negative implications of recombinant DNA technology
What will be an ideal response?
Peter Sheldon found that the number of tail “ribs” in ____ changed over a 3 million year period with no evidence of
speciation.
a. horses b. trilobites c. insects d. humans e. ectoprocts
Plants with seeds inside a fruit
A. produce pollen. B. are angiosperms. C. are flowering plants. D. All of the above are correct.
DNA polymerase and RNA polymerase are similar in that
a) both produce a double-stranded molecule. b) both use deoxyribonucleotides as substrates. c) both require energy to break hydrogen bonds. d) the products of both are usually polyadenylated. e) None of the above.