Which Phenotype Would Be Observed in an E

question 23

Multiple Choice

Which phenotype would be observed in an E. coli cell with the lacY- genotype?

• A) Cells would not be able to accumulate lactose due to the absence of the lactose permease membrane protein.
• B) Cells would not be able to accumulate lactose due to the presence of a defect in the fi- galactosidase gene.
• C) Cells are able to cleave an indicator molecule even if lactose is absent as an inducer.
• D) Cells are unable to cleave an indicator molecule even if lactose is available as an inducer.

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Definitions:

Teres Major

The teres major is a muscle located in the upper arm that helps in rotating the arm inward and also assists in drawing the arm toward the body.

Ventral Surface

The front or anterior surface of the body, opposite to the dorsal surface.

Pectoralis Group

A group of muscles located in the chest, responsible for various movements of the shoulder joint, including flexion, adduction, and internal rotation.

Dorsal Surface

The upper surface or back side of an organism or body part, especially in animals.