Aria and Marco are dizygotic twins. From what we know about dizygotic twins, which of the following characteristics would be accurate regarding Aria and Marco?
A. Andrew and Alexandra will have the same color hair and eyes.
B. Andrew and Alexandra share about one half of their genes.
C. Andrew and Alexandra are a rare combination with respect to the statistics of the percentage of boy-girl fraternal twin pairs.
D. Andrew and Alexandra originated from the same zygote.
Answer: B
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