MC cause of abortion in first trimester is, defect in:
Ans. is c, i.e. EmbryoRef. Dutta Obs. 7/e, p 159, 160; Williams Gynae 1/e, p 138As explained earlier most common cause of abortion in first trimester are chromosomal abnormalities involving the zygote or embryo.
Placenta
Uterus
Embryo
Ovarian
Abortion