Theodosus Dobzhansky, the pioneering researcher on Reproductive isolation has defined race as a "group of population which is reproductively isolated to the extent that the exchange of genes between them is absent or so slow that the genetic differences are not diminished." Implied in this definition are four features of a race.
The biological and scientific reasoning behind the conception of race is today sadistically trashed. The objective and scientific reasoning behind the biological concept of race is increasingly substituted by subjective and unscientific bases of culture. The growth of "Racism" in recent decades on the basis of cultural and intellectual superiority has led to the new concept of "ethnic cleansing" as seen in former Yugoslavia. People are being increasingly differentiated on the basis of unscientific concepts like "purity and superiority of blood", "fine color", "superior mental and physical abilities" and "cultural superiority". In other words, race and concept of race has paved the way for ethnocentrism.
In 1952, the UNESCO has made a declaration regarding the concept of race.
Owing to these difficulties in comprehending the scientific objectivity and failure to translate them into objective facts, the concept of race is being abandoned today, of late, the concept of race has only become a myth and not a reality.
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