Explanation
Solution
Correct answer is option A.
Explanation for correct option:
A. ET- In vitro fertilization is a method in which fertilization of male gamete (spermatozoon) and female gamete (ovum) outside the body in almost similar conditions as that in the body followed by zygote or embryo transfer(ET).
B. IUI-The technique is used in those females where the husband either is unable to inseminate or has a very low sperm count. In such cases, the semen of the husband or donor male is first collected and then is artificially introduced either into the vagina or into the uterus(intrauterine insemination or IUI) of the female.
C. IUT- After IVF, the embryo with more than 8 blastomeres is transferred into the uterus called intrauterine transfer or IUT.
D. GIFT- Gamete intrafallopian transfer method is used in females who cannot produce ova but can provide a suitable environment for fertilization and further development of the embryo in the oviducts. In such cases, the ovum from the donor female is surgically removed and is then introduced into the fallopian tube of such females.
So, the correct answer is 'IUI'.
A. Ovum from donor female and sperm from donor male are fertilized in laboratory. The zygote(upto 8 blastomeres stage) then transferred to fallopian tube called zygote intra fallopian transfer or ZIFT.
B. ICSI- Intra cytoplasmic sperm injection (ICSI) is a specialized technique to form an embryo in the laboratory in which a sperm is directly injected into the ovum placed in a nutrient broth.
C. GIFT- Gamete intra fallopian transfer method is used in females who cannot produce ova but can provide suitable envoirnment for fertilization and further development of embryo in the oviducts. In such cases, ovum from the donor female is surgically removed and is then introduced into the fallopian tube of such females.
D. ET-In vitro fertilization is a method in which fertilization of male gamete (spermatozoon) and female gamete (ovum) outside the body in almost similar conditions as that in the body followed by zygote or embryo transfer(ET).
So, the correct answer is 'ICSI'.
$$\textbf{Correct option:B and C}$$
$$\textbf{Solution:}$$
$$\textbf{Option (A)}$$
$$\bullet$$ In this technique sperm is collected form the male partner and it is directly injected into the cytosol of an oocyte by micropuncture of the zona pellucida.This is known as intra cytoplasmic sperm injection.
$$\textbf{Option (B)}$$
$$\bullet$$ Intrauterine transfer is when the zygote divides to produce more than 8 blastomeres stage then it is directly transferred to the uterus.
$$\textbf{Option (C)}$$
$$\bullet$$ GIFT stands for gamete intra uterine transfer. In this practice sperm is collected from a healthy donor or husband and unfertilized egg from a healthy female donor or wife and transferred inside the fallopian tube where they fuses naturally in vivo.This process is expensive but the results are better than IVF ,it requires a healthy fallopian tube.
$$\textbf{Option (D)}$$
$$\bullet$$ IVF stands for in vitro fertilization. In this process,ovum is collected from the female and semen is collected from the male ,and these gametes are fused to form a zygote outside the body in almost similar conditions as that found in the female body.
$$\textbf{Option (E)}$$
$$\bullet$$ When the zygote produced after the fusion of collected gametes is let to divide several times to create 8 blastomeres ,at this stage it is transferred to the fallopian tube this is known as ZIFT (zygote intra fallopian transfer ).
$$\textbf{Hence, the correct option is (B) and (C)}$$
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