Abstract
One hundred and ninety normal males from three ethnically different populations (Caucasians, American blacks and East Indians) were selected to study the frequency distribution of length of the Y chromosome, fluorescent (f) and non-fluorescent (nf) segments as a function of Y/F, f/F and nf/F indices. The QFQ techniques was performed to identify the f and nf segments. The frequency distribution of the total length of Y chromosome was not normally distributed in all three populations (P less than 0.05). Extensive statistical analysis revealed that the non-random distribution of the total length was due to skewness and kurtosis for both the n and nf segments. The clinical implications as well as evolutionary aspects of such variation in ethnic anthropology are discussed.
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