The generation of a knock-out organism generally requires all the following EXCEPT ________
A) a selectable marker
B) embryonic stem cells
C) a targeting vector
D) knowledge of the sequence product
E) knowledge of the target sequence
Answer: D
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Methylene blue
a. is used to kill cells that are moving too quickly to observe. b. detoxifies cells so they are safe to handle. c. is used as food for Physarum cells. d. is a biological stain used to increase contrast of transparent cells.
An animal has segments, bilateral symmetry, pharyngeal slits, a post-anal tail, and a notochord. It must be a member of the phylum _____.
Fill in the blank(s) with the appropriate word(s).
Genetic information is passed from one generation to the next through
A. DNA. B. asexual reproduction. C. sexual reproduction. D. gametes. E. All answers are correct.
In recombinant DNA technology, plasmids
A) are used to insert foreign DNA into bacteria. B) are necessary for cellular respiration in certain plants. C) are the sites of protein synthesis in bacteria. D) show restriction enzymes where to cut bacterial DNA. E) are isolated from the blood of mammals.