JAMB - Biology (2008 - No. 30)
The Rhesus factor of blood was first identified in a category of
monkeys
human females
human males
chimpanzees
توضيح
The Rh, or rhesus, factor was discovered in 1940 by K. Landsteiner and A. S. Wiener when they observed that an injection of blood from a rhesus monkey into rabbits caused an antigenic reaction in the serum component of rabbit blood