What role does DNA play in understanding homologous structures, and how is it used to support the Theory of evolution?

Homologous structures provide evidence for common ancestry, while analogous structures show that similar selective pressures can produce similar adaptations (beneficial features). Similarities and differences among biological molecules (e.g., in the DNA sequence of genes) can be used to determine species' relatedness.

Explanation: I took biology virtually.

Biologists often compare the sequences of related genes. If two species have the similar gene, it is because they inherited it from a common ancestor. In general, the more the DNA differences in homologous genes between two species, the more distantly the species are related.

Because there are tens of thousands of genes in humans and other organisms, DNA contains a tremendous amount of information about the evolutionary history of each organism. It determines evolutionary relationships among organisms, and it indicates the time in the past when species started to diverge from one another.

protocol for imps extraction focusing on membrane protein extraction, solubilisation, and purification.

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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