Question:
If the division in the zygote occurs between 9-12 days after fertilization, which of the following twin is expected?
If the division in the zygote occurs between 9-12 days after fertilization, which of the following twin is expected?
Show Hint
In the case of monochorionic monoamniotic twins, be cautious of potential complications, including cord entanglement due to the shared amniotic sac.
Updated On: Apr 30, 2025
- Dichorionic diamniotic
- Conjoint
- Monochorionic diamniotic
- Monochorionic monoamniotic
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
The timing of zygote division after fertilization determines the type of twins.
If the zygote divides 0-3 days post-fertilization, dichorionic diamniotic twins are formed (two placentas, two amniotic sacs).
If division occurs 4-8 days, monochorionic diamniotic twins are formed (one placenta, two amniotic sacs).
If division happens 9-12 days, monochorionic monoamniotic twins are formed (one placenta, one amniotic sac).
If division happens after 13 days, conjoint twins (Siamese twins) may occur. Thus, the correct answer is Monochorionic monoamniotic (4), as division at 9-12 days results in a single amniotic sac and a single placenta.
If the zygote divides 0-3 days post-fertilization, dichorionic diamniotic twins are formed (two placentas, two amniotic sacs).
If division occurs 4-8 days, monochorionic diamniotic twins are formed (one placenta, two amniotic sacs).
If division happens 9-12 days, monochorionic monoamniotic twins are formed (one placenta, one amniotic sac).
If division happens after 13 days, conjoint twins (Siamese twins) may occur. Thus, the correct answer is Monochorionic monoamniotic (4), as division at 9-12 days results in a single amniotic sac and a single placenta.
Was this answer helpful?
0
0
Top FMGE Biology Questions
- Melanin is derived from which of the following amino acids?
- Which of the following cell pathways occurs exclusively in the cell cytoplasm?
- The culture media that is used to differentiate lactose fermenters and non-lactose fermenters is
- A truck driver comes with complaints of a painless indurated genital ulcer after unsafe intercourse. Which of the following investigations can be used to diagnose the causative organism?
- A cancer patient undergoing radiotherapy is given a dose of 1.8 to 2 Gy once daily for 5 days per week for a duration of 6 to 8 weeks. What is this type of radiotherapy called?
View More Questions
Top FMGE Obstetrics Questions
Top FMGE Questions
- Melanin is derived from which of the following amino acids?
- Which of the following cell pathways occurs exclusively in the cell cytoplasm?
- The culture media that is used to differentiate lactose fermenters and non-lactose fermenters is
- A truck driver comes with complaints of a painless indurated genital ulcer after unsafe intercourse. Which of the following investigations can be used to diagnose the causative organism?
- A cancer patient undergoing radiotherapy is given a dose of 1.8 to 2 Gy once daily for 5 days per week for a duration of 6 to 8 weeks. What is this type of radiotherapy called?
View More Questions