I only have one reason but hope it helps!
Because without those bases pairing there <span>would be no structure of a DNA.</span>
Answer:
External factors include physical and chemical signals. Growth factors are proteins that stimulate cell division. – Most mammal cells form a single layer in a culture dish and stop dividing once they touch other cells.
Explanation:
From Google
A layer of ice on the surface keeps the water temperature warmer than the air temperature.
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The best and most correct answer among the choices provided by your question is the second choice.
<span>
Introns are functional proteins that would contain the information contained within which of the following regions of DNA.</span>
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