Answer:
it is the last one
Explanation:
Isotopes are atoms that have the same number of protons but different numbers of neutrons. So B would not be correct...
because they have have negligible mass
Answer:
I believe the correct answer is<em> </em><u><em>C. mRnA translation. </em></u>
Explanation:
Because the gene expression is controlled on two levels. First, transcription is controlled by limiting the amount of mRNA that is produced from a particular gene. The second level of control is through post-transcriptional events that regulate the translation of mRNA into proteins.