If a father is Rh+ and the mother is Rh-, what is the Rh status of their child likely to be (assuming the father is homozygous)?
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Correct answer: 100% Rh+ (all children affected)
The Rh+ trait is dominant. If a homozygous Rh+ father (DD) and an Rh- mother (dd) have a child, the child will inherit one D allele and one d allele (Dd), resulting in an Rh+ phenotype.
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