Why do we not use probes in this dna paternity simulation and still obtain results?

In DNA paternity test, we do not use probes for it cannot confirm the identity of an individual. Instead, it technically rule out a parent in DNA paternity test and this is the reason why we can still obtain results. 

A probe is a small piece of DNA that is a match for a specific part of a single strand of DNA since everyone’s DNA is different. This strand is cut into different number of fragments and different lengths. In paternity test, the length of these fragments are match with the child.

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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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