Your bodies because your body can either reject or accelpt them because some are good and some are bad it just depends
The Answer is B
Explanation: because when you draw the punnet square there are 4 possible outcomes
The lac genes encoding enzymes are lacZ, lacY, and lacA. The fourth lac gene is lacI, encoding the lactose repressor—"I" stands for inducibility. One may distinguish between structural genes encoding enzymes, and regulatory genes encoding proteins that affect gene expression.
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Well for internal <span>they have proteins that respond to events inside the cell which are called internal regulators! They allow the cell cycle to move on only when certain processes have happened inside the cell internally. The opposite for external and it means p</span><span>roteins that respond to events outside the cell are called </span>external regulators<span>.
Hope this helps</span>