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How can you calculate the recombination frequency between a and b in the previous question?
Pia mater
The delicate innermost layer of the meninges that directly covers the surface of the brain and spinal cord, providing it with blood vessels.
Meninges
The three protective membranes that cover the brain and spinal cord, consisting of the dura mater, arachnoid mater, and pia mater.
Subarachnoid space
The space surrounding the brain and spinal cord, situated between the arachnoid membrane and the pia mater, which contains cerebrospinal fluid.
Subarachnoid space
The fluid-filled space surrounding the brain and spinal cord between the arachnoid membrane and the pia mater.
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