2. How are the amino acids formed from the codon in Mutation #2 different from those formed from the original codon pattern? 3. How do the mutations in your model relate to what you know about mutations?
4. Research: Research mutations and find out if they are mostly good and add to the advancement of the organism or if they are mostly harmful resulting in the damage or possible death of the organism, or if they are neutral having no effect on the organism. Give statistics and cite your source of information.

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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b is the answer and if you need further with anything message me