Why Do Brothers and Sisters Not Look Exactly Alike

question 33

Multiple Choice

Why do brothers and sisters not look exactly alike?

• A) Each fertilized egg gets a random assortment of genes from the mother and the father.
• B) While the egg cells all contain identical genetic material, the sperm cells have a great deal of variation.
• C) Siblings have the same genetic combination, but their different environments when growing up cause them to look differently.
• D) Boys tend to get more genetic material from their father, and girls tend to get most of their genetic material from their mother.

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