Replication of the eukaryotic chromosome is initiated at
A. single site.
B. two sites.
C. 10 sites.
D. multiple sites.
Ans: D. multiple sites.
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How is the Ti plasmid used to create transgenic plants?
a. The Ti plasmid allows all of the plant cells to host the bacteria Rhizobium radiobacter and thus express the foreign gene that was inserted into the bacterial chromosome. b. The Ti plasmid inserts the foreign gene directly into the plant's nuclear DNA. c. Once the Rhizobium radiobacter forms a tumor in the plant, the tumor cells can take up the foreign DNA and incorporate it into their chromosomes. d. The Ti plasmid inserts the foreign DNA into the DNA in the chloroplast. e. The Ti plasmid inserts the foreign DNA into the plant's mitochondrial DNA.
To find a specific DNA sequence in a genomic library, researchers employ single-stranded RNA or
DNA molecules called _________. Fill in the blank(s) with the appropriate word(s).
The menstrual cycle and ovulation are coordinated
A. so that ovulation occurs when the uterus has a thick lining. B. because hormones produced by the uterus stimulate the ovary. C. by changes in body temperature. D. None of the above is correct.
Realizing that you did not study as much as you needed to for this exam, you start to take the test
However, it is difficult to concentrate because your heart is racing, your stomach seems tied in a knot, you are breathing too quickly, and your mouth is dry. Most likely, you are experiencing the effects of the ________. A) motor nervous system B) sympathetic division C) parasympathetic division D) central nervous system