Topics: CRISPR and Sickle-Cell Disease Quiz
What is the role of the Cas9 enzyme in the exa-cel therapy?
A. To cut both strands of DNA
B. To guide the enzyme to the target stretch of DNA
C. To stitch the DNA strands back together
D. To disable the BCL11A gene
Select your answer:

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Nervous System › View____________________ are nerve cells.
A. neurons
B. neurologists
C. nephrons
D. nephrologists
Nervous System › View
Which part of the brain controls your hormones?
A. Cerebrum
B. Cerebellum
C. Hypothalamus
D. Pituitary gland