Question

Siblings share ____$\%$ of their genes while fraternal twins share ____$\%$ and identical twins share ____$\%$ of their genes (on average).

• A. 50, 50, 50
• B. 50, 50, 100
• C. 100, 100, 100
• D. 50, 50, 100

Answer 1

The correct option is D

50, 50, 100

Identical twins have the same DNA; however, they may not look exactly identical to one another. Identical twins share 100% of their DNA. Siblings and fraternal twins on average, share 50% of their genes.