Pleiotropy occurs when one gene influences multiple, seemingly unrelated phenotypic traits. A single gene is responsible for pigmentation and hearing.
Drag is another one i actually did this project in 5th grade so i know some of this hope this helps.
The answer for this is Density
The arachnoid mater meninges are in the middle of the outer and inner meninges. The arachnoid mater is the central of three layers that create up the meninges or membranes that setting the spinal cord and brain. The dura mater is the outmost cover of the meninges and the innermost cover that outlines thoroughly to the many folding and gaps of the brain is named the pia mater.
