Which of the following statements best describes why parents and offspring do not look the same? Select all that apply -Trats in many organisms are determined by the genetic combination of the parent's genes.
-Trats in offspring are determined by chance and cannot be predicted
-Traits are determined through the process of mitosis, but the cells only contain half of the DNA
-Trats may be affected by both environmental and genetic mutations,

d bonding propertys

explanation:

carbon can form so many different compounds not just with oxygen

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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the answer is definitely a