Concept explainers
(a)
To determine: Whether the Z gene product will be expressed in the presence of lactose and in the absence of lactose for the given strain: I+P+O+Z+.
Introduction: The lac operon or the lactose operon is a cluster of common-promoter genes that is found in E. coli and helps in transporting and digesting lactose. By analyzing the lac operon of various mutants of E. coli through genetic analysis, a lot of information has been gained. The lac operon of E. coli is an inducible operon.
(b)
To determine: Whether the Z gene product will be expressed in the presence of lactose and in the absence of lactose for the given strain: IsP+O+Z+.
Introduction: The lac operon or the lactose operon is a cluster of common-promoter genes that is found in E. coli and helps in transporting and digesting lactose. By analyzing the lac operon of various mutants of E. coli through genetic analysis, a lot of information has been gained. The lac operon of E. coli is an inducible operon.
(c)
To determine: Whether the Z gene product will be expressed in the presence of lactose and in the absence of lactose for the given strain: I+P+OcZ+.
Introduction: The lac operon or the lactose operon is a cluster of common-promoter genes that is found in E. coli and helps in transporting and digesting lactose. By analyzing the lac operon of various mutants of E. coli through genetic analysis, a lot of information has been gained. The lac operon of E. coli is an inducible operon.
(d)
To determine: Whether the Z gene product will be expressed in the presence of lactose and in the absence of lactose for the given strain: I-P+O+Z+.
Introduction: The lac operon or the lactose operon is a cluster of common-promoter genes that is found in E. coli and helps in transporting and digesting lactose. By analyzing the lac operon of various mutants of E. coli through genetic analysis, a lot of information has been gained. The lac operon of E. coli is an inducible operon.
(e)
To determine: Whether the Z gene product will be expressed in the presence of lactose and in the absence of lactose for the given strain: IsP+OcZ+.
Introduction: The lac operon or the lactose operon is a cluster of common-promoter genes that is found in E. coli and helps in transporting and digesting lactose. By analyzing the lac operon of various mutants of E. coli through genetic analysis, a lot of information has been gained. The lac operon of E. coli is an inducible operon.
(f)
To determine: Whether the Z gene product will be expressed in the presence of lactose and in the absence of lactose for the given strain: I+P-O+Z+.
Introduction: The lac operon or the lactose operon is a cluster of common-promoter genes that is found in E. coli and helps in transporting and digesting lactose. By analyzing the lac operon of various mutants of E. coli through genetic analysis, a lot of information has been gained. The lac operon of E. coli is an inducible operon.
(g)
To determine: Whether the Z gene product will be expressed in the presence of lactose and in the absence of lactose for the same strain as given in part (a) but with glucose.
Introduction: The lac operon or the lactose operon is a cluster of common-promoter genes that is found in E. coli and helps in transporting and digesting lactose. By analyzing the lac operon of various mutants of E. coli through genetic analysis, a lot of information has been gained. The lac operon of E. coli is an inducible operon.
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Becker's World of the Cell (9th Edition)
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