Abstract
This study was conducted on a sample of 12 pairs from different institutions of Farook college area. A twin is one of the two offspring produced in the same pregnancy. Both identical and fraternal twins form the sample. A questionnaire, finger prints of twins and aptitude test are used for collection of data. The questionnaire response, aptitude test result, dermatoglyphic angle were analysed. From the analysis it is concluded that the phenotypic similarities are more among identical twins. Both type shares a vast difference in psychological traits. The blood group are the same for both types. Dermatoglyphic angle show only a little variation in identical twins. And fraternal twins show much more variation. There is a difference in IQ and school results in both types