Marfan+Syndrome_Ma

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Pedigree for Marfan syndrome

Marfan syndrome is a dominant disease. Mark has Marfan syndrome. Mark and Anne have five kids, John, Mike, Ron, Mary, and Claire. John, Mike and Mary also have it. John then married Alice. They had two kids, Sam and Hanna. They both have Marfan syndrome. Mike married Erynn. Erynn has Marfan Syndrome. Mary married Nick, who does not have Marfan syndrome. They had three kids, Noah, Noelle, and Brian. Maddie then married Jake, who also does not have the syndrome. They had two kids, Rachel and Shane. Hanna married Mark, who does not have Marfan syndrome, and had twin girls. Jess has it, but Lauren does not. Noah married Celia, who does not have Marfan syndrome, and had Steven. Steven has Marfan syndrome. None of the family members have two dominant alleles.

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