re very rare or are mainly found in certain ethnic groups.  Blood types have been used in forensic science and were formerly used to demonstrate impossibility of paternity (e.g., a type AB man cannot be the father of a type O infant), but both of these uses are being replaced by genetic fingerprinting, which provides greater certainty.[33]සමාජය හා සංස්කෘතිය[සංස්කරණය]ප්‍රධාන ලිපිය: Blood types in Japanese cultureA popular belief in Japan is that a person's ABO blood type is predictive of their personality, character, and compatibility with others. This belief is also widespread elsewhere in Asia, notably Taiwan and South Korea.[34] Deriving from ideas of historical scientific racism, the theory reached Japan in a 1927 psychologist's report, and the militarist government of the time commissioned a study aimed at breeding better soldiers.[34] The fad faded in the 1930s due to its lack of scientific basis and ultimately the discovery of DNA in the following decades which it later becam