Compare and contrast the information you can learn from looking at a pedigree with the information you can learn from a karyotype. you should have at least 3 differences/similarities explained in your answer.

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

where is the diagram?

if you insert the diagram ill be able to you