The stage transferred into the uterus after induced fertilization of ovum in the laboratory is
embryo at $4$ blastomeres stage
embryo at $2$ blastomeres stage
morula
zygote.
Test tube babies are produced by
Select the correct match of the techniques given in column $I$ with its feature given in column $II$.
column $I$ | column $II$ |
$A.$ $ICSI$ | $I$ Artificially introduction of semen into the vagina or uterus. |
$B.$ $IUI$ | $II$ Transfer of ovum collected from a donor into the fallopian tube where fertilization occur |
$C.$ $IUT$ | $III$ Formation of embryo by directly injecting sperm into the |
$D.$ $GIFT$ | $IV$ Transfer of the zygote or early embryo (with upto $8$ blastomeres) into a fallopian tube. |
$E.$ $ZIFT$ | $V$ Transfer of embryo with more than $8$ blastomeres into the uterus |
$GIFT$ is
$A$ : In test-tube baby programme, ova from wife/donor (female) and sperms from the husband/donor (male) are collected and induced to form zygote under simulated conditions in laboratory.
$R$ : Embryos with more than 8 blastomeres are then transferred to fallopian tube $(ZIFT)$ to complete its further development.
Give scientific reasons : A couple without children can have a child by modern research.