Zoology - Biotechnology and Its Applications Question with Solution | TestHub

There are great advances in the identification and construction of genes but attempts at inserting them and coaxing them to function normally within human body have not been successful. The immune system destroys cells expressing the newly inserted genes. Parental gene therapy or gene therapy prior to birth overcomes this problem as the body does not reject them. Recognition of 'self' and 'foreign' is not developed at this stage.