Washington State Twin Registry
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    • Why are twins special?
    • Zygosity
      • Identical vs Fraternal Twins
      • How zygosity is determined
      • Zygosity determination done by the Twin Registry
      • The Importance of Zygosity Testing
      • Zygosity Testing Companies
      • Common Misconceptions about Zygosity
    • Joining the Washington State Twin Registry
      • Frequently Asked Questions about Joining
        • Why join the Washington State Twin Registry?
        • How do you know I’m a twin?
        • Am I eligible to join the Registry?
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        • What happens next?
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Siny Tsang, Staff Scientist

 

Publications

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