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the parents who say their child has been lost should have their blood test taken in order to find out their blood groups and all the lost childrens blood group should be taken. continuous study should be carried out to find whether the parents were hetrozygous or homozygous and all possiblities should be taken into consideration and than the gene flow diagram should be drawn to find poosible genotypes and the child's genotype should be matched with his parents but its better to use DNA printing as it gives accurate results

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Q: How can you use blood types to help identify lost children?
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