Fill in the information in the table below, telling if an E. coli bacterium that

Question

Fill in the information in the table below, telling if an E. coli bacterium that has the following genotypes will make a functional form of beta-galactosidase and/or permease in the presence versus absence of lactose. If the bacterium will produce a functional version of the protein, indicate this with a plus sign ("+"). If it will not produce the protein, indicate this with a minus sign ("-"). Assume all z mutations are missense mutations that result in a nonfunctional version of the protein being made unless otherwise specified.

Explanation / Answer

lacIs lacP+ lacO+ lacZ+ lacY+/

lacI+ lacP+ lacOc lacZ+ lacY+

lacI- lacP+ lacO+ lacZ+ lacY+/

lacI+ lacP+ lacO+ lacZ+ lacY+

lacI+ lacP- lacO+ lacZ- lacY+/

lacI+ lacP+ lacO+ lacZ+ lacY+

lacI+ lacP- lacO+ lacZ+ lacY+/

lacI+ lacP+ lacO+ lacZ- lacY+

Lactose absent Lactose abdsent Lactose present Lactose presnt Gneotype Beta- Gal Permease Beta- gal Permease lacI- lacP+ lacO+ lacZ+ lacY+ - - + + lacI+ lacP- lacO+ lacZ+ lacY+ - - + + lacI+ lacP+ lacO- lacZ+ lacY+ - - - -

lacIs lacP+ lacO+ lacZ+ lacY+/

lacI+ lacP+ lacOc lacZ+ lacY+

- - - -

lacI- lacP+ lacO+ lacZ+ lacY+/

lacI+ lacP+ lacO+ lacZ+ lacY+

- - + +

lacI+ lacP- lacO+ lacZ- lacY+/

lacI+ lacP+ lacO+ lacZ+ lacY+

- - + +

lacI+ lacP- lacO+ lacZ+ lacY+/

lacI+ lacP+ lacO+ lacZ- lacY+

+ - + +

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