In which of the following assisted reproductive technologies, the embryos are transferred to assist those females who cannot conceive?

The zygote or early embryos (with up to 8 blastomeres) can be transferred into the fallopian tube (ZIFT–zygote intra fallopian transfer) and embryos with more than 8 blastomeres, into the uterus (IUT – intra uterine transfer) to assist women who cannot conceive.