Multiple choice

Rh factor was discovered by

  1. Harvey

  2. Land Steiner

  3. Watson

  4. Darlington
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Karl Landsteiner discovered the Rh (Rhesus) factor in 1937 while working with Rhesus monkey blood cells, building on his earlier discovery of ABO blood groups. Harvey studied circulation, Watson and Crick discovered DNA structure, and Darlington worked on chromosomes - none discovered the Rh factor.

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