1. Abortion is right if the fetus is neither independent (because no independent life would survive) nor autonomous (that means that it isn't actually an independent life because without the mother it dies instantly)

2. The fetus is neither an independent nor an autonomous life

Conclusion: Abortion is right.

(note: that means that it isn't morally wrong)

Furthermore, if it is wrong to have an abortion, it is also wrong to remove a special tumor which has the same attributes a fetus has.

Abortion becomes wrong when the fetus becomes an autonomous life, which begins at about 5-6 Months after conception.