Answer: Yes and No
Explanation: I think that we should use technology to alter our genetic code if someone is ill/sick because it is actually beneficial, but I think we shouldn't dive too deep or get lost in altering genes because it can cause unintended consequences.
They have two pairs of main nerve cords organized around a number of paired ganglia. while they don't have a "true brain"-- they have somewhat of a nervous system, composed of the two, or three pairs of nerve cords contained in the visceral mass.
Oxygen, carbon, and hydrogen.
