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Science Bowl Question

📅 NSB Round Robin 2013🎓 MS🔄 Round 8#️⃣ Question 2❓ TOSS-UP📝 Multiple Choice

In humans, freely hanging earlobes is completely dominant to attached earlobes. If you have attached earlobes but both of your biological parents have freely hanging earlobes, then which of the following statements is true?

W) At least one of your parents is homozygous [hoh-muh-ZY-guhs] for the dominant trait
X) Both of your parents must be homozygous for the dominant trait
Y) Neither of your parents is homozygous for the dominant trait
Z) Nothing can be said about the genotype of your parents because there is not enough information
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