Answer: A Mutation occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene
Explanation:
Isotopes of an element will contain the same number of protons and electrons but will differ in the number of neutrons they contain. In other words,isotopes have the same atomic number because they are the sameelement but have a different atomic mass because they contain a different number of neutrons.
I believe the answer is Photosythesis. -Bio 1
Bacteria and Archaea have different cell membrane composition.
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