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Q.
$Rh$ factor is present in
UP CPMTUP CPMT 2012
Solution:
A protein named rhesus antigen is present on the surface of red blood corpuscles in many humans. It was discovered in $1940$ by Landsteiner and Wiener in the blood of Rhesus monkey, hence its name. Depending on the race, $85$ to $99$ percent of the white population have this rhesus antigen (also called $Rh$ factor) and are called $Rh$ positive $(Rh^+)$. Others who do not have this factor are known as $Rh$ negative $(Rh^-)$. $Rh^+$ is dominant to $Rh^-$.