You have isolated two mutations that show decreased expression of the Lac operon. However, unlike like the promoter mutations, these mutations don’t respond to the inducer IPTG. These mutations, designated Lac3– and Lac4–, are evaluated for the quantity of ß-galactosidase and permease activity expressed with or without IPTG:

 

Mapping experiments reveal that Lac3– and Lac4– are different short deletions located in the region before the start of the LacZ gene. Given the data shown above suggest which genetic element(s) in addition to part of the promoter has been deleted in each mutant. 

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#Question id: 11134

#SCPH28 | Zoology

Which of the following statements concerning synaptic transmission is correct?

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#Question id: 15726

#SCPH01 Biochemistry

Tissues and cells cultured in a liquid medium produce culture of single cells and cells clumps of few to many cells

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#Question id: 18720

#SCPH01 Biochemistry

The derivatives of M13 vector are exact counterparts of _________

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#Question id: 15731

#SCPH05 I Biotechnology

Conditions for rooting involves

1. low salt

2. reduced sugar level

3. addition of NAA

Which of the above statements combinations are correct

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#Question id: 27165

#I Life Science/ Life Sciences Group – I-V

Sequences those have sequence identity above 60% falls in the zone of