Answer:
The correct answer will be option-A.
Explanation:
Lac operon is a set of genes arranged sequentially for lactose metabolism in E.coli. The lac operon gets activated in the presence of lactose as the lac operon consists of three enzyme coding genes called lacZ which codes for the β-galactosidase enzyme, lacY which codes for lactose permease, lacA which codes for acetyltransferase along with a regulatory gene called lacI which codes for repressor proteins.
The repressor proteins bind to the operator and control the transcription. When it binds to operator its huts off the transcription. If a mutation occurs in the laci gene then the protein will lose the machinery which will turn off the activity of enzymes and will lead to the constitutive expression of the genes irrespective of the inducer present or not.
Thus, option-A is the correct answer.
False,Neptune is bigger than earth.
Answer:
The independant variable is the Vaseline
The two mistakes were her not counting how many normal leaves their were and makin a faulty conclusion.
Photosynthesis stops when the gases stop flowing.
Explanation:
Biology. No explanation needed
<span>lithium loses an electron and gives it to fluoride ion and the make an ionic compound. hope i helped
</span>
Kingdom Protista includes all the organisms mentioned
The credit goes to nanazurg
