★ Molecular Genetics Quiz
What is Cas9 and what does it do?
A. a protein enzyme that cuts both strands of DNA at sites specified by an RNA guide
B. a DNA sequence that binds the Cas9 protein
C. an RNA molecule that binds to target DNA via complementary base pairing
D. a viral protein that disrupts bacterial membranes
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Liver cells differ from skin cells mainly because they…
A. have unique ribosomes.
B. use different genetic codes.
C. contain different genes.
D. express different genes.
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