Please help me answer this! I will mark brainliest :) In three to five sentences, explain the advantage of keeping some DNA needed by mitochondria in the cell’s nucleus and some in the mitochondria itself.

Explanation:

Mitochondrial DNA is the small circular chromosome present inside the cell organelle called mitochondria used for energy production. This type of DNA passes from the mother to the offspring. Mitochondrial DNA (mtDNA) has several advantages over nuclear DNA (nDNA):

for species identification purposes

including a higher copy number

a lack of sequence ambiguities from heterozygous genotypes

a faster rate of mutation

Thus, the advantages of keeping some DNA needed by mitochondria in the cell’s nucleus and some in the mitochondria itself are given above.

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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