Explain what CRISPR is and how it differs from traditional forms of gene therapy
CRISPR is a new technique potentially offering a cure for diseases such as Huntington's, muscular dystrophy, and sickle cell. The gene-editing technique developed in 2012 at the University of California, Berkeley enables scientists to snip out a piece of any organism's DNA, much like a film editor splices a film reel. CRISPR differs from traditional forms of gene therapy as it can be used to edit genes on the human germ line, so that the changes made are passed down through the generations, permanently changing the gene pool. This would erase the disease from the person's germ line, so future offspring would also be spared. On the darker side, this capability gives rise to concerns about the creation of mutants and designer babies.
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Indicate whether the statement is true or false
Which of the following is NOT a common sign or symptom of stroke?
A) Acute chest pain B) Facial numbness C) Visual disturbances D) Loss of coordination
________ is used to determine the age, growth rate, and position of the fetus, as well as obvious birth defects. It is generally performed at 16 to 20 weeks and is generally painless.
A. Ultrasound B. Cardiogram C. X-ray D. Amniocentesis
The axons not insulated by the myelin sheath are known as _______________ matter.
Fill in the blank(s) with the appropriate word(s).