DNA polymerase catalyzes the synthesis of ____
a. DNA
b. histones
c. proteins
d. ribose
e. nucleosomes
a
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Which of the following genes is correctly matched with its function?
A. The Hox genes illustrate evolution of neural pathways. B. The BMP4 gene illustrates evolution of lungs for breathing air. C. The gremlin gene illustrates the evolution of the inner ear mechanism. D. The Pax6 gene illustrates the evolution of complex organs such as the eye. E. The gremlin gene along with the Pax6 gene code for development of the eye.
What is the main cause of cancer?
A. DNA replication no longer working properly B. Old age, during which the cells of the body no longer work properly C. Exposure to carcinogens in the environment D. We do not currently know the main cause of cancer.
Runners are modified stems that resemble roots and
are also known as a. stolons. b. rhizomes. c. bulbs. d. corms. e. tubers.
RNA virus genomes may be either
a. plus sense or minus sense. b. nonsense or missense. c. negative or positive. d. double-stranded or triple-stranded.