Answer: D.) This gene sequence ensures transcription of arabinose genes only
when arabinose is available, saving the cell from expending energy
unnecessarily
The answer is D.. Hope it helps..
Bones are the structure of the body, muscles allow the bones to move, nerves allow messages to be sent back and forth from the brain to the mucells telling them to move, joints join the bones of your body and allow them to move.
Answer:
plasmids (nonchromosomal DNA molecules) helps bacteria to exchange genetic material.
Pollution, Global Warming, deforestation, Mass extinction