Respuesta :
Answer:
Conformation change
Explanation:
Repressor protein in the absence of lactose binds to the operator region of the lac operon and does not allow the RNA polymerase to bind to the promoter and start the transcription of lac gene.
In the presence of lactose or allolactose, the repressor protein is not able to bind to the operator region because lactose binds to the active site of repressor protein which results in a conformation change in the repressor protein.
So as the shape of the repressor protein gets changed it do not able to bind to the operon operator and the operon is expressed.
Answer:
The Hox genes control how body parts are shaped and arranged. Genes are sections of DNA that code for a particular protein; they give the organism its visible traits. Altering the nucleotide sequence in this section of DNA alters protein synthesis. This change causes a completely different body part to grow.
Explanation:
