a) i) Inability to produce a normal egg. - GIFT (Gamete Intra Fallopian Transfer): This technique involves the transfer of an ovum collected from a donor into the fallopian tube of another female who cannot produce one.
ii) Low Count of Sperm. - ICSI (Intra Cytoplasmic Sperm Injection): In this technique, sperm is directly injected into the ovum; in the laboratory.
iii) Blocked Fallopian tube- ET (Embryo Transfer): it involves transferring blastocyst into the uterus and this is called IntraUterine Transfer (IUT).
b) MTPS are essential in certain cases where continuation of pregnancy could be harmful or even fatal either to mother or to the foetus both. (1) It is also permissible in cases of rapes