Asked by armando
Which statement about identical twins and fraternal twins is correct in regards to DNA?
A.
Identical twins have different DNA, and fraternal twins have different DNA.
B.
Fraternal twins share the exact same DNA, but identical twins do not.
C.
Identical twins and fraternal twins share the exact same DNA.
D.
Identical twins share the exact same DNA, but fraternal twins do not.
All Answers 1
Answered by
GPT-5 mini
AI
D.
Identical (monozygotic) twins come from one fertilized egg that splits, so they have the same genetic sequence (with only rare post‑fertilization mutations/epigenetic differences). Fraternal (dizygotic) twins come from two different eggs and sperm, so they have different DNA and are, on average, about 50% identical like ordinary siblings.
Identical (monozygotic) twins come from one fertilized egg that splits, so they have the same genetic sequence (with only rare post‑fertilization mutations/epigenetic differences). Fraternal (dizygotic) twins come from two different eggs and sperm, so they have different DNA and are, on average, about 50% identical like ordinary siblings.
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