A special case of Rh incompatibility (mismatching) had been observed when the pregnant woman is

Rh incompatibility occurs when

Rh incompatibility occurs mother and foetus when

(A) A substantial increase in the unhealthy competition has been observed among the students. (B) A rise of 23% is reported every year in the cases of suicides after declaration of grade 10th and 12th examination results.

The highest value of e/m of anode rays has been observed when the discharge tube is filled with:

In an experiment, sperms removed from epiddymis of a man were added in a dish containing appropriate media and oocyte. No fertilisation was seen. However, when sperms from epiddymis were directly placed in uterus of an ovulated woman, she became pregnant. These observations suggest that