Which gene(s) produce proteins that control the cell cycle?
What will be an ideal response?
proto-oncogenes
tumor suppressor genes
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Overexpression of proteins using bacteria :
A. makes subsequent purification of the recombinant DNA harder. B. requires bacterial promoters to be present in the bacterial vector. C. requires eukaryotic promoters to be present in the bacterial vector. D. requires eukaryotic ribosome binding sites to be present in the bacterial vector. E. results in a properly folded, active protein.
The population at right is being subjected to _____
1.directional selection
2.stabilizing selection
3.disruptive selection
4.selection against intermediate forms
Intermittent sterilization is also called tyndallization.
a. true b. false
Which of the following membrane lipids does not contain a fatty acid tail?
(a) phosphatidylcholine (b) a glycolipid (c) phosphatidylserine (d) cholesterol