Efficiency in Disputed Paternity Cases of a New Category of Markers: Chromosome Variants
Using suitable cytogenetic techniques, chromosome polymorphism has been studied in eighty disputed paternity cases.
Based on the Belgian frequencies, the theoretical rate of exclusion is 88.2% when a girl and 95% when a boy. Thus chromosome variants added to 22 blood group systems increase the exclusion rate from 99.7% to 99.96 and 99.98%.
In case of exclusion, the mean number of involved systems increased from 4 to 5.
In cases without exclusion, the probability of paternity was often high and, in some cases, the paternity was almost certain.
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