-humerus femur
A They both attach their respective limbs to the axial skeleton.
B. They both have similar joints at each end.
C. They both are extremely strong and made only of compact bone.
OD. They both have hollow spaces filled with bone-generating cells.
E.
They both protect vital organs.

Plz ! a scientist wants to produce a cow that makes a particular human protein in it’s milk the desired protein causes blood to clot and can be used to treat hemophilia (a blood clotting disorder). which of the following would be best for the scientist to use? a. genetic crosses. b. cloning. c. selective breeding. d. genetic engineering.