Cytogenetic Study In Criminals (Murderers): Role Of XYY Chromosome In Criminality 1911-1914
Crime & criminals are curse to the society. All types of advanced scientific methods should be used for detection of crime, to prove the guilt of criminal and also to see that innocent subjects are not victimized. Although there are many methods of detecting crime, cytogenetic study has a unique character of its own in its application to forensic science. The crime rates in India are increasing and approximately 5% of the criminals are murderers. The famous Danish â€˜Adoption studiesâ€™ states that in addition to socio-economic factors, hereditary plays an important role in the determination of criminality.
In this study an attempt has been made to find out if there is any definite association between the criminality and chromosomal aberrations. Hence the individuals who were convicted by the court of Law under IPC 302 as murderers are subjected to cytogenetic study. Out of 140 individuals subjected to study only 84 would be analyzed for chromosomal study because of culture failure in rest of the cases. By doing cytogenetic study of these criminals it was found that there is a definite association between the criminal behaviour and XYY chromosome. It is also suggested that this positive association should be studied in a large population before this observation can be used as a biological indicator of criminality.