Question
The incidence of monozygotic twins is ______
| A. |
1 in 20
|
| B. |
1 in 200
|
| C. |
1 in 80
|
| D. |
1 in 250
|
Show Answer
|
Correct Answer � D
Explanation
|
|
Ans. is D. i.e. 1 in 250
- The frequency of monozygotic twins is relatively constant worldwide and it is 1 set per 250 births.
- Dizygotic twins are responsible for the wide variation in incidence especially due to Assisted reproductive technologies.
- This incidence is generally independent of race, heredity, age, and parity.
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