MTP stands for medical termination of pregnancy (MTP) or it may be called as abortion in common language.
The egg usually has one of the two X-chromosomes, but in this case, the pregnant female has egg having XX condition. The doctor advises for M.T.P. because her foetus may be carrying an abnormal number of chromosomes as the fertilization of the XX egg by the Y sperm will create a trisomy condition.
It will result in a zygote having XXY condition, It will lead to nondisjunction abnormality such as Klinefelter syndrome where males may have an extra X chromosome. The child may suffer from abnormalities and thus the female was advised to have termination of pregnancy.