A common form of muscular dystrophy is an X-linked disorder that causes progressive weakening of skeletal muscles. It is usually passed from mother to
son. A mother who is a carrier for this disorder (XX') marries a man who is
normal (XY). Which of the following is true statement about the couple's
sons?

because they are eaten by the frog and the frog getseaten by the snake and the snake by the eagle

b. read the phase at the intersection of any given temperature and pressure.

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.