Genesis 2

 As we read - 

"...the Lord God caused a deep sleep to fall upon Adam, and he slept: and he took one of his ribs, and closed up the flesh instead thereof;

22 And the rib, which the Lord God had taken from man, made he a woman, and brought her unto the man."  (Genesis 2:21–22)

...President Spencer W. Kimball taught that this was symbolic.  He compared to our way of thinking in our day using the comparison "he just a chip off the old block".  Obviously, someone is not a piece of wood.  It is only symbolic.