MEDizzy
MEDizzy
USMLE
NUCLEIC ACID
A third-year medical student joins a laboratory that studies gene regulation. The laboratory uses bacteria to study gene expression and metabolic regulation after exposure to toxic compounds. The goal is to generalize the observations seen in prokaryotic cells in response to the toxins and to compare the response to eukaryotic cells. Which of the following statements is true regarding prokaryotic and eukaryotic genomes?
Explanation
ExplanationAlthough there are some differences in mitochondria, the genetic code is nearly universal. Only eukaryotes have a diploid genome, which is organized into chromatin with the aid of highly positively charged histones. Only eukaryotes have numerous short repetitive DNA sequences throughout their genome, like Alu sequences, which are found in primates and humans.
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