Taxonomy is the classification of things; organisms.
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Answer:
Pia mater
Explanation:
Three meninges cover the brain and spinal cord. Pia mater refers to the deepest meninx of the brain. It is a thin delicate layer of connective tissue. It is a transparent connective tissue layer like that of cellophane. Being a transparent and thin tissue layer, it looks like a cellophane wrap adhered to the surface of the brain.
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Fetus can survive an extra copy of a chromosome, but being hemizygous is <span>usually fatal</span>