Example question of codominance

please need asap

this are the some example question of codominance

situation in which both alleles of a gene contribute to the phenotype of the organism ?

occurs when both alleles are expressed equally in the phenotype of the heterozygote ?

so, all of this question the answer would be codominance.

Hope this helps

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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