NEET · Biology · STD 12 - 5. molecular basis of inheritance
Twins are born to a family that lives next door to you. The twins are a boy and a girl. Which of the following must be true?
- A They are monozygotic twins.
- B They are fraternal twins.
- C They were conceived through in vitro fertilization.
- D They have \(75 \%\) identical genetic content.
Answer & Solution
Correct Answer
(B) They are fraternal twins.
Step-by-step Solution
Detailed explanation
Fraternal twins or dizygotic twins are 2 separate fertilized eggs, they usually develop 2 separate amniotic sacs, placentas and supporting structures.
If twins are a boy and a girl, this indicates they are fraternal twins.
If twins are a boy and a girl, this indicates they are fraternal twins.
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